华东理工大学网络学院 行政管理学(专)_阶段练习一

华东理工大学网络学院《数据库原理[专]》阶段练习4（第五～八章）一、单项选择题。

1、数据库中数据的正确性、有效性和相容性称为_________。

A.恢复B.并发控制C.完整性D.安全性2、授权是数据库系统采用的_________。

A.恢复措施B.并发控制措施C.完整性措施D.安全性措施3、数据库的转储属于DBS的_________。

A.完整性措施B.安全性措施C.并发控制措施D.恢复措施4、在数据库管理系统中的权限管理方面，若授权的数据对象的__________，则授权子系统就越灵活。

A.范围越大B.范围越小C.范围越适中D.约束越细致5、数据库后援副本的用途是________。

A.安全性保障B.一致性控制C.故障恢复D.数据的转储6、SQL语言提供______语句用于实现数据存取的安全控制。

A.GRANTMITC.CREATE TABLED.ROLLBACK7、下述哪一条是并发控制的主要方法_______。

A.日志B.授权C.备份D.封锁8、如果事务T1获得了数据对象D上的排他锁，那么________。

A.T1对D只能读不能写B.T1对D只能写不能读C.另一个事务T2对D既不能读也不能写D.另一个事务T2对D只能读不能写9、SQL中的主键子句和外键子句属于DBS的____________。

A.完整性措施B.安全性措施C.并发性措施D.恢复措施10、事务T1符合两段锁封锁法的序列是________。

A.LOCK S(A)…LOCK S(B)…UNLOCK (B)…UNLOCK (A)B.LOCK X(A)…UNLOCK(A)… LOCK S(B)… UNLOCK(B)C.LOCK S(B)…LOCK X(A)…UNLOCK(A)…LOCK S(C)D.UNLOCK(A)…UNLOCK(B)…LOCK X(A)…LOCK X(B)二、多项选择题。

1、数据库安全性控制通常采取的措施是________。

华东理工大学网络学院（专科）《数据结构》------ch7图、ch9排序班级学号姓名成绩一、填空题（每空1分，共10分）1.具有n个顶点的有向图最多有n（n-1）条边。

2.在无向图G的邻接矩阵中，求第i个结点的度的方法是求邻接矩阵第i行非零元素之和。

3.堆排序通常采用顺序存储结构。

4. 与快速排序和堆排序相比，归并排序的最大特点是，它是一种稳定的排序方法。

5.具有8个顶点的有向完全图有56 条弧。

6. 在无向图G的邻接矩阵A中，若A[i][j]等于1，则A[j][i]等于 1 。

7.在一个待排序的序列中，只有很少量元素不在自己最终的正确位置上，但离他们的正确位置都不远，则使用直接插入排序方法最好。

8. 已知有向图的邻接矩阵，要计算i号顶点的入度，计算方法是：将i列元素累加。

9. n个顶点的强连通图至少有n 条边，至多有n(n-1) 条边。

二、判断正误（对的用”T”表示，错误的用”F”表示。

每小题1分，共10分）1. ( T )若一个有向图的邻接矩阵中对角线以下元素均为零，则该图的拓扑有序序列必定存在。

2. ( F )快速排序的速度在所有的排序方法中为最快，而且所需附加空间也最少。

3.（ F ）采用邻接表存储的图的深度优先遍历算法类似二叉树的按层次遍历算法。

4.（T ）在待排序的元素序列基本有序的前提下，效率最高的是插入排序。

5.（T ）图的广度优先遍历类似于树的层次遍历。

6.（T ）拓扑排序时，总是在有向图中选择入度为0的顶点输出。

7.（ F ）若要求一个稠密图G的最小生成树，最好用Kruscal算法来求解。

8.（T ）拓扑排序输出的顶点数小于有向图的顶点数，则该图一定存在回路。

9.（T ）设有一稠密图G，则G采用邻接矩阵存储较省空间。

10.（F）n个顶点e条边的图采用邻接矩阵存储，深度优先遍历算法的时间复杂度为O(n+e)。

三、单项选择题（每小题2分，共20分）1.已知图的邻接表如下所示，根据算法，则从顶点0出发按广度优先遍历的结点序列是 C 。

《大学英语（1）》阶段练习二及答案华东理工大学网络教育学院《大学英语（1）》阶段练习2（一级）（Unit 3-Unit 4）Part I Vocabulary and structureDirections: Choose the best one from the four choices to complete the sentence and mark your answer on the Answer Sheet.1.We have been focusing on the research and development of new products to meet the ______changing demands of our customers.A. constantlyB. convenientlyC. closelyD. chiefly2.Feelings of depression can have a significant ______ on one’s work, health, and enjoyment oflife.A. insectB. impactC. importanceD. indeed3.The twin brothers are so alike that even their closets friends can hardly ______ betweenthem.A. extinguishB. treatC. markD. distinguish4.During the trip he proved himself to be an amusing ______, full of wit and humor.A. conditionB. commentC. complaintD. companion5.Animals cannot ______ for long without adequate water and food.A. intendB. tendC. surviveD. insist6.Clever criminals can find ways to break computer codes and ______ millions of dollars totheir accounts.A. differB. referC. transferD. offer7.In many situations, we have asked and answered some pretty ______ questions.A. toughB. touchC. troubleD. trust8.Everyone thought that it was odd for her to ______ the well-paid job – they did not know shefound a better one.A. quiteB. quitC. quiltD. quote9.Sometimes more money will not solve a problem, and in fact, it may ______ make theproblem worse.A. partlyB. deeplyC. actuallyD. recently10.I can ______ you that the medicine is very effective and can relieve your headache.A. sureB. ensureC. insureD. assure11.Sam wants to dine at this restaurant, so I’d better ______a table in advance.A. reserveB. conserveC. preserveD. deserve12.When people drive to work, they usually choose from a small number of ______ routes,depending on traffic conditions.A. privateB. singleC. favoriteD. total13.All of us, especially the youth, should learn how to ______time and use it efficiently.A. cherishB. adoptC. packD. withdraw14.To ______ the deadline, they have to work overtime for at least two weeks.A. meetB. getC. takeD. catch15.He could have finished the report on ______, but somehow he fell behind.A. planB. expectationC. scheduleD. date16.Jack doesn’t know how to use the washing machine. Can you ______ him ______?A. bring … backB. help … outC. get … overD. turn … down17.The doctor and the nurses tried hard to ______ the wild patient ______.A. br ing … upB. calm … downC. hold … onD. take … into18.How long do you think it will take a patient to ______ thepain after the operation?A. work outB. break offC. come downD. get over19.Never ______ until tomorrow what can be done today.A. call offB. put offC. take offD. break off20.Don’t be too hard ______ the students; they have tried their best.A. inB. withC. atD. on21. A foreigner is incapable ______ becoming president of the United States.A. toB. forC. ofD. in22.As a student, you should focus your attention ______ your study rather than how you dressyourself every day.A. toB. inC. atD. on23.Remember to send me a photo of us next time you ______to me.A. are writingB. will writeC. has writtenD. write24.--- Catherine, I have cleaned the room for you.--- Thanks. You ______ it. I could manage it myself.A. needn’t doB. needn’t have doneC. mustn’t doD. shouldn’t have done25.The editor told the reporter to write a ______ report.A. two-thousand-wordsB. two-thousands-wordsC. two-thousand-wordD. two thousand words26.The secretary worked late into the night, ______ a long speech for the president.A. to prepareB. preparingC. prepareD. was preparing27.Without your help, I ______ in my English study.A. would not have succeededB. hadn’t succeededC. will not succeedD. won’t have succeeded28.The monitor made a proposal that the whole class ______ the matter.A. discussedB. would discussC. be discussedD. discuss29.Those ______ make the best use of their time are more likely to succeed.A. whichB. whatC. whomD. who30.The graduating students are busy ______ material for their reports.A. collectB. collectingC. collectedD. to collect31.It wasn’t until nearly a month later I received the manager’s reply.A. sinceB. whenC. thatD. as32.______ their service, the workers of the hotel are active in learning English.A. ImprovingB. To improveC. ImproveD. Having improved33.She thought I was praising her son, ______ as a matter of fact, I was scolding him for his badbehaviors at school.A. whileB. thereforeC. whichD. so that34.Not until he came back ______.A. I could fall asleepB. could I fall asleepC. I had fallen asleepD. had I fallen asleep35.From what is mentioned above we can draw a conclusion ______ theory must be combinedwith practice.A. whatB. whichC. howD. thatPart II Reading ComprehensionDirections: There are 4 reading passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice and mark your answer on the Answer Sheet.Passage 1Dolphins (海豚) are not fish, but warm-blooded animals. They live in groups, and speak to each other in their own language. In this they are like other animals, such as bees and birds. But dolphins are very different from almost all land animals. Their brain is nearly the same size as our own, and they live a long time --- at least twenty or thirty years.Like some animals, dolphins use sound to help them findtheir way around. They also make these sounds to talk to each other and to help them find food. We now know they do not use their ears to receive these sounds, but the lower part of the mouth, called the jaw.Strangely, dolphins seem to like man, and for thousands of years there have been stories about the dolphin and its friendship with people.There is a story about sailors in the 19th century. In a dangerous part of the sea off the coast of New Zealand, they learnt to look for a dolphin called Jack. From 1871 to 1903 Jack met every boat in the area and showed it the way. Then in 1903 a passenger on a boat called “The penguin” shot and wounded Jack. He recovered and for nine years more continued to guide all ships through the area --- except for “The Penguin”.Today, some people continue to kill dolphins, but many countries of the world now protect them and in these places it is against the law to kill them.36.Dolphins are different from many other animals in that they ______.A. live in groupsB. have large brainsC. are warm-bloodedD. have their own language37.Which of the following does the dolphin use to help it find its way around?A. Its nose.B. Its ears.C. Its mouth.D. Its eyes.38.Why did the sailors off the coast of New Zealand look forJack?A. He was lonely and liked to be with people.B. They enjoyed playing with him.C. He was seriously wounded.D. They wanted his help39.By telling the story of Jack the writer wanted to show that ______.A. dolphins are friendly and cleverB. people are cruel to animalsC. Jack is different from other dolphinsD. dolphins should be protected by law40.Which of the following statements is NOT true according to the passage?A. Dolphins have their own language.B. Dolphins use a part of their mouth to find their way around.C. In many countries one will break the law if he/she kills a dolphin.D. It took Jack nine years to recover after it was wounded by the shot in 1903.Passage 2Not everyone in the world requires the same amount of living space. The amount of space a person needs around him is a cultural difference, not an economic one. Knowing your own psychological space needs is important because they strongly affect your choices, including, for example, the number of bedrooms in the home. If you were brought up in a two-child family, and both you and your sister or brother had your own bedrooms, the chances are, if you have two children or more, that you also will offer separate bedrooms for them. In America, for example, they train people to want to have their own rooms bygiving them their own rooms when they are babies. This is very rare in the world. In many other countries, the baby sleeps in the same bed with his parents or in a bed near them.The space in the home also shows a lot about psychological space needs. Some families gather closer to each other and the size of their house has nothing to do with it. Others have separate little corners where family members go to be alone.Although it is true that psychological space needs are not decided by economic reasons, they sometimes have to be changed a little because of economic pressures. It is almost impossible, however, to completely change your psychological space needs.41.The passage is chiefly concerned with ______.A. American way of livingB. living conditions in different countriesC. space requirements in different culturesD. space requirements and economic factors42.According to the author, the amount of living space a person needs is decided by ______.A. his cultural backgroundB. the relationship between the family membersC. his financial situationsD. how many rooms there are in his house43.The example of American families seems to suggest that ______.A. Americans are more eager to be alone when they are at homeB. psychological space needs are developed when one is very youngC. it is advisable to let the baby sleep with his parentsD. it is advisable to let the baby sleep in a separate room44.Some families gather close to each other at home because ______.A. they have limited living spaceB. it satisfies their psychological space needsC. they have been brought up in a small familyD. they haven’t small corners for themselves45.According to the author, psychological space needs ______.A. will change as one’s incomes are reducedB. will change if you move to a smaller houseC. can be changed at willD. cannot be changed completelyPassage 3People and the sources of air pollution are found in the same places. This means that cities with large populations have the biggest problem of dirty air. Air pollution is caused by many different things. A major source of air pollution is the gas fumes (烟) from cars. Statistics show that 93 percent of all auto trips are within cities. Another major source of dirty air is the burning of coal and oil for energy. This energy is needed to make electricity. Of course, much more electricity is used in the city than in the country.On the average, we throw away more garbage than the year before. The burning of garbage contributes to air pollution. Many major industries are also responsible for the dirty air in the cities. The fumes from iron, steel, chemical, and petroleum production add pollution to the air.The effects of air pollution range from slight headaches to death. The levels of pollution found in heavy traffic may cause headaches for loss of clear vision. Wherever coal and oil are usedfor fuel, fumes may kill trees and plants and cause metal to corrode (腐蚀). In some of the larger cities, these fumes endanger the lives of human beings by contributing to lung diseases and causing early death.46.The key point of the passage is that ______.A. the cause of air pollution is peopleB. the causes and the effects of air pollution are both found in citiesC. the effects of air pollution range from headaches to deathD. air pollution is caused by dirty air47.What is the purpose of this passage?A. To persuade people to stop polluting the air.B. To tell the causes of air pollution.C. To tell why cities are bad places to live in.D. To describe how people living in cities feel about polluted air.48.Why is air pollution more serious in the city than in the country?A. Because there are larger population in cities.B. Because the air in the city is dirty.C. Because there are more cars in the city.D. Because there are much more gas fumes from cars and burning of coal and oil for energyin the city than in the country.49.The fumes from coal and oil may cause metal ______.A. to turn blackB. to become rustyC. to corrodeD. to twist50.In larger cities, the fumes from coal and oil may contributeto ______.A. lung diseasesB. heart diseasesC. loss of clear visionD. serious headachePassage 4A man once sa id how useless it was to put advertisements in newspapers. “Last week,” said he, “my umbrella was stolen from a London church, it was a present, I spent twice its worth in advertising, but did not get it back.”“How did you write your advertisement?” asked one of the listeners, a merchant.“Here it is,” said the man, taking out of his pocket a slip from a newspaper. The other man took it and read, “Lost an umbrella from the City church, the man who finds it will receive ten shillings leaving it at No. 10 Br oad Street.”“Now,” said the merchant, “I often advertise and find that it pays me well. But the way in which an advertisement is expressed is of extreme importance. Let us try your umbrella again, and if it fails, I’ll buy you a new one.”The merchant the n took a slip of paper out of his pocket and wrote: “If the man who was seen to take an umbrella from the City Church last Sunday evening does not wish to get into trouble, he will return the umbrella to No. 10 Broad Street. He is well known.”This appeared in the paper, and on the following morning, the man was astonished when he opened the front door. In the doorway lay at least twelve umbrellas of all sizes and colors that had been thrown, and his own was among them. Many of them had notes fastened to them saying that they had been taken bymistake, and begging the loser not to say anything about the matter.51.What is an advertisement?A. A news item.B. A public announcement in the press, on TV, etc.C. One way to voice one’s view.D. Public opinions.52.The man once thought advertising was ______.A. of little useB. of some useC. practicalD. valuable53.Why did the merchant say “I often advertise and find that it pays me well”?A. Because he knew how to advertise.B. Because he had more money for advertising.C. Because he found it easy to advertise.D. Because he had a friend in the newspaper where he advertised.54.Did the merchant know who had taken the umbrella?A. Sure.B. Not very sure.C. Not at all.D. Probably.55.This is a story about ______.A. a useless advertisementB. how to make an effective advertisementC. how the man lost and found his umbrellaD. what the merchant did for the umbrella ownerPart III ClozeDirections: There are 20 blanks in each of the following passages. For each blank there are four choices marked A, B, C, and D. You should choose the one that best fits into the passage and mark your answer on the Answer Sheet.1I do a lot of management training each year for the Circle K Company. Among the 56__ we discuss in our classes is the 57 of quality employees.“What has caused you to stay _58 enough to become a manager?” I asked. After a while a new manager took the 59 and said slowly, “It was a baseball glove.”Cynthia said she used to 60 a Circle K clerk job as an interim (临时的) one while she looked for something 61 . On her second day behind the counter, she received a(n) 62__ from her nine-year-old son, Jessie. He 63 a baseball glove for the little League. She 64__ that as a single mother, money was 65 , and her first check would have to go for paying __66 .When Cynthia arrived for work the next morning, Patricia, the store manager asked her to come to her small office and handed her a box. “I overheard you 67 to your son yesterday,” she said, “a nd I know that it is 68 to explain things to kids. This is a baseball glove for Jessie. I know you have to pay bills 69 you can buy gloves. You know we can’t 70__ good people like you as 71 as we would like to; but we do 72 and I want you to know how 73 you are to us.”Cynthia’s story shows vividly that people 74 more how much a(n) 75 cares than how much he pays.56. A. topics B. problems C. difficulties D. lessons57. A. employing B. praising C. keeping D. improving58. A. soon B. long C. strong D. calm59. A. position B. decision C. question D. advice60. A. take B. change C. lose D. consider61. A. lighter B. easier C. better D. higher62. A. letter B. call C. answer D. email63. A. bought B. kept C. needed D. offered64. A. complained B. explained C. understood D. admitted65. A. short B. enough C. spare D. tight66. A. food B. education C. clothes D. bills67. A. talking B. crying C. arguing D. scolding68. A. easy B. hard C. simple D. nice69. A. after B. until C. when D. before70. A. value B. remain C. pay D. fire71. A. much B. many C. pleasant D. possible72. A. regret B. agree C. worry D. care73. A. excellent B. important C. thankful D. thoughtful74. A. remember B. refuse C. thank D. realize75. A. mother B. clerk C. official D. manager2Venus (金星) is often the _76_ object in the morning or evening sky. It is also one of the __77_ objects to the earth: only the moon and, _78_ , Mars are nearer to us than Venus. Why, then, do we know so little about it?The reason is _79_ the surface of Venus is always covered _80_ a thick layer of clouds. These clouds brilliantly reflect the light _81_ reaches them from the sun and make theplanet __82 very bright to us. We are not sure about _83_ the clouds contain, and we don’t know _84_ the surface of Venus 85 look like.One _86_ suggestion is that the clouds of Venus _87_ be vapors of oil. Our earth clouds _88_ water ---because ourtemperature is just _89_ to turn a little of _90_ seas into vapor. The temperature on Venus, _ 91 _ is four times as hot as boiling water, is quite high enough to _92_ some kinds of oil in to vapors. If Venus had any “seas”, they cannot be seas of water. The water there _93_ away millions of years ago. _94_ they may be “sea” of heavy oil. Some kinds of oil would need to be hotter than Venus before they _95_ boil.76. A. brightest B. nearest C. smallest D. biggest77. A. smallest B. brightest C. nearest D. biggest78. A. however B. but C. sometimes D. then79. A. why B. how C. which D. that80. A. in B. by C. over D. on81. A. of which B. that C. this D. it82. A. seem B. to seem C. seeming D. seems83. A. what B. that C. the thing D. which84. A. when B. how C. where D. what85. A. must B. might C. ought to D. should86. A. good B. basic C. better D. interesting87. A. may B. can C. must D. would88. A. are composed of B. are made up of C. are made of D. are consisted of89. A. high enough B. as high enough C. enough high D. enough high as90. A. ours B. our C. their D. my91. A. that B. as C. which D. this92. A. rotate B. alter C. turn D. revolve93. A. should have boiled B. ought to have boiledC. must have boiledD. would have boiled94. A. Hence B. So C. But D. Therefore95. A. would B. will C. may D. mightPart IV Word FormationDirections: Fill in the blanks with the correct form of the words given in the brackets and mark your answer on the Answer Sheet.96.I turned off all the lights in the apartment so that my bedroom was ______ dark. (complete)97.All these experiences have made him a ______ man, and one of the world’s most legendaryleaders. (mystery)98.His later stories are not interesting because of their poverty of ______. (imagine)99.The company will go bankrupt (破产) sooner or later because of its poor ______. (manage) 100.Tom had a very ______ look when his father told him they would not go to the movies.(disappoint)101.Several small businesses combined to form a large ______ company (power)102.The ______ of the atomic theory by physicists has led to many scientific discoveries. (accept) 103.Our foreign policy is to maintain ______ relations with all countries. (friend)104.The government tried hard to seek ways to reduce pollution and increase ______. (efficient)105.I often stay at home reading and writing at night, but ______ I may go to see a movie with my friend. (occasion) 106.The members said nothing, with the ______ that they didn’t like the proposal. (imply)Part V TranslationDirections: Translate the following sentences into English.107.这间诊所不仅对职员和家属开放，还对外开放。

华东理工大学网络教育学院材料力学课程阶段练习一一、单项选择题1.如图所示的结构在平衡状态下，不计自重。

对于CD折杆的受力图，正确的是( )A.B.C.D.无法确定2.如图所示的结构在平衡状态下，不计自重。

对于AB杆的受力图，正确的是( )A.B.C.D.无法确定3.如图所示悬臂梁，受到分布载荷和集中力偶作用下平衡。

插入端的约束反力为( )A.竖直向上的力，大小为qa 2；逆时针的力偶，大小为2qa B.竖直向上的力，大小为qa 2；顺时针的力偶，大小为2qa C.竖直向下的力，大小为qa 2；逆时针的力偶，大小为2qa D.竖直向下的力，大小为qa 2；顺时针的力偶，大小为2qa4.简支梁在力F 的作用下平衡时，如图所示，支座B 的约束反力为( )A.F ，竖直向上B.F/2，竖直向上C.F/2，竖直向下D.2F ，竖直向上5.简支梁，在如图所示载荷作用下平衡时，固定铰链支座的约束反力为( )A.P ，竖直向上B.P/3，竖直向上C.4P/3，竖直向上D.5P/3，竖直向上6.外伸梁，在如图所示的力和力偶作用下平衡时，支座B的约束反力为( )A.F，竖直向上B.3F/2，竖直向上C.3F/2，竖直向下D.2F，竖直向上7.如图所示的梁，平衡时，支座B的约束反力为( )A. qa，竖直向上B. qa，竖直向下2，竖直向上C. qa4，竖直向上D. qa8.关于确定截面内力的截面法的适用范围有下列说法，正确的是( )。

A.适用于等截面直杆B.适用于直杆承受基本变形C.适用于不论基本变形还是组合变形，但限于直杆的横截面D.适用于不论等截面或变截面、直杆或曲杆、基本变形或组合变形、横截面或任意截面的普遍情况9.下列结论中正确的是( )。

A.若物体产生位移，则必定同时产生变形B.若物体各点均无位移，则该物体必定无变形C.若物体无变形，则必定物体内各点均无位移D.若物体产生变形，则必定物体内各点均有位移10.材料力学根据材料的主要性能作如下基本假设，错误的是( )。

华东理工大学网络学院《数据库原理[本]》阶段练习1（第一、二章）一、填空题。

1、数据管理技术的发展经过三个阶段：_手工管理阶段_、_文件系统阶段_和数据库系统阶段。

2、数据库中四种主要的数据模型包括_层次数据模型_、_网状数据模型_、_关系数据模型和面向对象的数据模型。

3、根据目前数据库系统的应用和发展，可以将数据库应用系统体系结构分为：单用户结构、客户/服务器结构_、客户/服务器机构和_浏览器/服务器结构_等类型。

4、层次模型用_树型结构来表示实体间联系的。

5、长期存储在计算机中、有组织、可共享的数据集合称为__数据库_。

6、关系数据库语言可以分为：__关系代数_、关系演算语言和具有两者双重特点的语言SQL，其中关系演算语言又可以分为_元组关系演算_和__域关系演算_两类。

7、包含在所有候选码中的属性称为_主属性_，所有候选码之外的属性称为_非主属性。

8、分解关系时，应遵循的两条主要原则是_无损连接_和_保持依赖_。

9、关系模式的存储异常表现在_数据冗余_、_更新异常_、_插入异常_和_删除异常_。

10、对关系的基本要求是满足_第一_范式，即_关系的每一个属性都是不可再分的数据项_。

二、单项选择题。

1、单个用户使用的数据视图的描述称为_ A__。

A.外模式B.概念模式C.内模式D.存储模式2、下面哪一条不在DBA（数据库管理员）的职责范围内？_ A_A.设计数据库管理系统B.设计数据库的逻辑结构C.制定数据库的存储策略D.监督和控制数据库的运行3、CODASYL组织提出的DBTG报告中的数据模型是__ B_的主要代表。

A.层次模型B.网状模型C.关系模型D.面向对象模型4、文件系统与数据库系统的最大区别是__ C__。

A.数据共享B.数据独立性C.数据结构化D.数据冗余性5、模式DDL用来描述__ A__。

A.数据库的总体逻辑结构B.数据库的局部逻辑结构C.数据库的物理存储结构D.数据库的概念结构6、按照给定条件从一个关系中选择指定的属性组成的一个新的关系需要用__ B_关系代数运算。

华东理工大学网络教育学院大学英语（4）（本）阶段练习一Part I Vocabulary and Structure1. For further information, contact us by ___C__ following E-mail address.A) one B) a C) the D) /2. ___B__ food and equipment was kept in that cave during the war time.A) Quite a few B) A great deal ofC) Large quantities D) A large/great number of3. By 1990, production in the area is expected to double __A___ of 1980.A) that B) one C) it D) what4. From his ___C__ voice on the phone I know everything is going under way.A) satisfactory B) satisfying C) satisfied D) satisfactory5. Between 1974 and 1997, the number of overseas visitors rose ___A__27%.A) by B) for C) to D) in6. __A___ the thick trees, the bitter wind would have blown the house into pieces.A) But for B) Due to C) Except for D) Thanks for7. Until then, his family ___D__ from him for six months.A) didn’t hear B) hasn’t heardC) hasn’t been hearing D) hadn’t heard8. If the local peasants hadn’t given the soldiers clothes and food, they__D___ of cold and hunger.A) would B) will die C) would be dead D) would have died9. I don’t allow ___A__ here and I don’t allow any of you _____ anywhere.A) gambling… to gamble B) to gamble…gamblingC) gambling… gambling D) to gamble… to gamble10. Having been ill in bed for nearly a month, he had a hard time ___D__ the exam.A) pass B) to pass C) passed D) passing11. Those naughty boys were caught __B___ flowers in the garden again.A) to steal B) stealing C) to have stolen D) having stolen12. No more complaints, __D___ you will be dismissed from this company.A) so B) then C) and D) or13. Linda was walking in the street __B__ she noticed a thief stealing from anold lady.A) while B) when C) as D) which14. The ___B___ is just around the corner and you won't miss it.A) bicycle's shop B) bicycle shopC) bicycles shop D) bicycles' shop15. Mr. John was busy, ___B__he could not come.A) but B) therefore C) and D) nor16. Wu Dong was ___D___tired that he couldn't keep his eyes open.A) too B) much C) such D) so17. I paid __C___for the new book.A) half pound B) one pound and halfC) one and a half pounds D) one and half a pound18. While ___B__ for the bus at the bus station, I met an old friend of mine whom I haven't seen for 10 years.A) being waited B) waitingC) having waited D) waited19. Don't forget ___C___ your umbrella with you. It might rain in the evening.A) taking B) taken C) to take D) to be taking20. Jenny is learning Japanese. ___A__ her brother.A) So is B) So does C) Nor is D) Nor does21. Please tell me the main idea __C___ you have already gone through the whole paragraph.A) so B) before C) since D) while22. __B___ the receiver of the telephone than it rang again.A) I had put down no sooner B) I had no sooner put downC) No sooner have I put down D) No sooner I put down23. Jiuzhaigou Valley is so beautiful that it is worth __B___.A) you to visit B) visitingC) for you to visit D) for your visiting24. __B___ to have a good mastery of the English language.A) I take three years B) It takes me three yearsC) Three years take me D) Three years taking me25. Mary found it hard ___A__ the latest development in fashion.A) to keep up with B) keep upC) keeping up with D) keep up with26. You’ll have to be __A___ with my mother—she’s going rather deaf.A) patient B) popular C) bound D) disappointed27. I object __C___ the plan on the grounds that it is too expensive.A) with B) for C) to D) in28. There have been many ___C__ in their marriage but they still love each other.A) right and wrong B) back and forthC) ups and downs D) right and left29. We've missed the last bus. I'm afraid we have no ___B__ but to take a taxi.A) way B) choice C) possibility D) selection30. The committee was __D___ mainly of teachers and parents.A) comprised B) constituted C) consisted D) composed31. Fortunately, Jack was only slightly injured in the traffic __D__.A) incident B) event C) case D) accident32. In order to achieve the final success, we must __C___ our disputes and unite as one.A) lay down B) lay off C) lay aside D) lay up33. You should take the medicine after you read the __C____.A) lines B) words C) instructions D) suggestions34. It has been ten years since the Labour Party came into __C___ in that country.A) control B) force C) power D) charge35. Why he did it will remain a ___D__ for ever.A) strange B) pass C) public D) puzzlePart II Use of English1. - Good morning, John . How are you doing?- _____C____A) I'm pleased. B) Good night.C) Not so bad. And you? D) How do you do?2. - Good-bye for now.- _____A____A) The same to you. B) That's OK.C) See you. D) Long time no see.3. - Thanks for your help.- ______C______A) My pleasure. B) Never mind.C) Quite right. D) Don’t thank me.4. - Hello, I’m Harry Potter.- Hello, my name is Charles Green, but ________C____.A) call my Charles B) call me at CharlesC) call me Charles D) call Charles me5. - How do I get to the cinema?- _____D____A) It's very far. B) Yes, there is a cinema near here.C) It's well known. D) Go down this street and turn left.6. - Do you like to play basketball?- ____C_____A) Perhaps. B) No. Xiaowang does not like it.C) I am crazy about it. D) I am pleased about it.7. - Excuse me, I'm afraid you've overcharged me.- ________A________A) Oh, really? B) That's all right.C) That's fine. D) You're welcome.8. - I doubt whether the Chinese Football Team can win the game this time. - ___________B_________.A) That's true B) It's hard to sayC) I like the team D) I don't believe it9. Mr. Carol is not in. Can I take a message?___________A_______________________.A) Well, I’d prefer to call later. B) You’d better not.C) Thank you all the same. D) That’s all right.10. - Good afternoon. Can I help you?- ______C___A) No. I don't think so.B) Thank you.C) I need to buy a birthday present for my son.D) Yes. I think soPart III Reading ComprehensionPassage OneMr. Young ran his own business and worked very hard. His wife was afraid that he would get sick if he continued like that, so she often tried to get him to take a vacation. At last she managed to persuade him to do so, and she hoped that he would be able to enjoy his vacation without any disturbance, sobefore they left, Mrs. Young went to see her husband's secretary. She said to her, "My husband needs a vacation very much, so whatever happens, please don't bother him with telegrams and letters about business problems while we are away. Just wait till we get back."After Mr. and Mrs. Young had been away about a week, Mr. Young received a letter from his secretary which said, "Something terrible happened to your business, but I'm not going to bother you with it while you are enjoying your vacation."1. Mr. Young was the owner of a private business. AA) T B) F2. Mrs. Young worried about her husband's business. BA) T B) F3. Mrs. Young was afraid that her husband's vacation might be spoilt. AA) T B) F4. The secretary didn't explain in her letter what had happened to Mr.Young's business, because she didn't want to spoil Mr. Young's vacation.AA) T B) F5. You can learn from the story that Mr. Young had a stupid secretary. AA) T B) FPassage TwoAfter having lived for over twenty years in the same district, Albert Hall was forced to move to a new neighborhood. He surprised his landlord by telling him that he was leaving because he could not afford to buy any more chocolate.It all began a year ago when Albert returned home one evening and found a large dog in front of his gate. He was very fond of animals and as he happened to have a small piece of chocolate in his pocket, he gave it to the dog. The next day, the dog was there again. It held up its paws and received another piece of chocolate as a reward. Albert called his new friend "Bingo". He never found out the dog's real name, nor who his owner was. However, Bingo appeared regularly every afternoon and it was quite clear that he preferred chocolate to bones. He soon grew dissatisfied with small pieces of chocolate and demanded a large bar a day. If at any time Albert neglected his duty, Bingo got very angry and refused to let him open the gate. Albert was now at Bingo's mercy and had to bribe him to get into his own house! He spent such a large part of his weekly wages to keep Bingo supplied with thatin the end he had to move somewhere else.6. Albert lived there for many years. BA) T B) F7. Albert was moving because he did not like the place. BA) T B) F8. Albert and the dog became friends a year ago. AA) T B) F9. The dog visited Albert every day because it wanted the chocolate. AA) T B) F10. Albert "had to bribe him" means he had to take care of him. BA) T B) FPassage ThreeShyness is the cause of much unhappiness for a great many people. Shy people are anxious and self-conscious; that is, they are excessively concerned with their own appearance and actions. Worrisome thoughts are constantly occurring in their minds: what kind of impression am I making? Do they like me? Do I sound stupid? Am I wearing unattractive clothes?It is obvious that such uncomfortable feelings must negatively affect people. A person's conception of himself or herself is reflected in the way he or she behaves, and the way a person behaves affects other people's reactions. In general, the way people think about themselves has a profound effect on all areas of their lives.Shy people, having low self-esteem, are likely to be passive and easily influenced by others. They need reassurance that they are doing "the right thing." Shy people are very sensitive to criticism; they feel it confirms their feelings of inferiority. They also find it difficult to be pleased by compliment with a statement like this one, "You're just saying that to make me feel good.I know it's not true." It is clear that while self-awareness is a healthy quality, overdoing it is harmful.Can shyness be completely eliminated, or at least reduced? Fortunately, people can overcome shyness with determined and patient efforts in building self-confidence. Since shyness goes hand in hand with a lack of self-esteem, it is important for people to accept their weaknesses as well as their strengths.Each one of us is a unique, worthwhile individual, interested in our own personal ways. The better we understand ourselves, the easier it becomes to live up to our full potential. Let's not allow shyness to block our chances for arich and fulfilling life.11. What does the author try to prove by citing "what kind of impression am I making?" (Para. 1)__B____A) Shy people benefit from their caring about their appearance.B) People's shyness made them care too much about their appearance and actions.C) It's natural that shy people don't believe other's compliments.D) Shy people think they are different from others.12. According to the writer, self-awareness is __A___.A) a good qualityB) the cause of unhappinessC) harmful to peopleD) a weak point of shy people13. That shy people react to a compliment in such a way is ___B___.A) good B) unreal C) very reasonable D) harmful14. Which of the following statements is true, according to the passage? ___C__A) Shyness helps us to develop our potentialB) Shyness enables us to understand ourselves betterC) Shyness can block our chances for a rich lifeD) Shyness has nothing to do with lack of self-esteem15. It can be inferred from the passage that shy people __B___.A) should find more of their weaknessB) should understand themselves in the right wayC) had better ignore their weaknessD) can get rid of their shyness while maintaining low self-esteemPassage FourWhat makes a person a scientist? Does he have ways or tools of learning that are different from those of others? The answer is "no". It is not the tools a scientist uses but how he uses these tools that makes him a scientist. You will probably agree that knowing how to use a power is important to a carpenter. You will probably agree, too, that knowing how to investigate, how to discover information, is important to everyone. The scientist, however, goes one step further, he must be sure that he has a reasonable answer to his questions and that his answer can be confirmed by other persons. He also works to fit the answers he gets to many questions into alarge set of ideas about how the world works.The scientist's knowledge must be exact. There is no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different, any changes the scientist observes in a demonstration must be explained by the changes in the conditions. This is one reason that investigations are important in science. Albert Einstein, who developed the Theory of Relativity, arrived at this theory through mathematics. The accuracy of his mathematics was later tested through investigations, Einstein's ideas were shown to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations that may test his investigations.16. What makes a scientist according to the passage? __B___A) The tools he uses.B) The way he uses his tools.C) His ways of learning.D) The various tools he uses.17. The underlined part in the passage shows__C___.A) the importance of informationB) the importance of thinkingC) the difference between scientists and ordinary peopleD) the difference between carpenters and people with other jobs.18. A sound scientific theory should be one that __A___.A) works not only under one set of conditions at one time, but also under thesame conditions at other timesB) does not allow any changes even under different conditionsC) can be used for many purposesD) leave no room for improvement19. The author quotes the case of Albert Einstein to illustrate __C___.A) that measurements are keys to success in scienceB) that accuracy of mathematicsC) that investigations are important in scienceD) that the mathematical calculations may test his investigations20. What is the main idea of the passage? __D___A) The theory of relativity.B) Exactness is the core of science.C) Scientists are different from ordinary people.D) Exactness and ways of using tools are the keys to the making of a scientist.Part IV ClozeMany people would agree that stress is a major problem in modern life. It is certainly true that worry and quarrel can cause all kinds of illnesses, __D__ backache to severe headaches, or even more serious complaints such as high blood pressure.Many of us think __A__ stress as something that other people impose on us. We often complain about how other people put us __B__ pressure. But we should try not to let such pressure affect us. We should not forget that we are largely responsible for some of the stress ourselves. We sometimes take __E__ more work than our bodies and our minds can handle. We should learn to __C__ our limitations. We should be aware of which things are really important and which are not.1. A) of B) under C) accept D) from E) on2. A) of B) under C) accept D) from E) on3. A) of B) under C) accept D) from E) on4. A) of B) under C) accept D) from E) on5. A) of B) under C) accept D) from E) onPart V Translation1. This box can hold more books than that one.这个箱子比那个箱子能装更多的书。

华东理工大学网络学院（专科）《数据结构》------第3章、第4章、第5章班级学号姓名成绩一、填空题（每空1分，共20分）1. 栈和队列是两种特殊的线性表，栈的特点是先进后出，表达式求值，栈的典型应用有和实现递归过程。

2. 在具有n个单元的循环队列中，队列满时共有n-1 个元素。

3. 若串的长度不能确定，可采用动态存储结构，为串值分配一个存储空间，同时建立一个串的描述子以指示串值的长度和串在存储空间中的位置，称该结构为堆/堆结构。

4. 稀疏矩阵一种常用的压缩存储方法称为三元组表方式，即每个三元组表中的元素由、行、列、值、三部分组成。

5. 二维数组A[10][20]采用列序为主方式存储，每个元素占10个存储单元，且A[0][0]的存储地址是2000，则A[6][12]的地址是3260 。

6.进栈序列为a，b，c，则通过出栈和进栈操作可能得到的a，b，c的不同的排列序列有5 种。

7. 广义表((a,b),c,d)的表头是(a, b) ，表尾是(c,d) 。

8.已知二维数组A[20][10]采用行序为主方式存储,每个元素占2个存储单元,并且A[10][5]的存储地址是1000,则A[18][9]的存储地址是1168 。

9. 广义表((((a),b),c),d)的表头是(((a),b),c) ，表尾是(d) 。

10. 设s=’YOU ARE JUDGING IT RIGHT OR WRONG’，顺序执行下列操作：SubString(sub1,s,1,8)；SubString(sub2,s,20,5)；StrCat(sub1,sub2); 则最后sub1的值为：’YOU ARE RIGHT’。

11. 假设用循环单链表实现队列，若队列非空，且队尾指针为R, 则将新结点S加入队列时，需执行下面语句：S->next=R->next ；R->next=S ；R=S 。

12.设有两个串p和q，求q在p中首次出现的位置的运算称作子串定位。

华东理工大学 网 络 教 育 学 院《离散数学（专）》阶段练习三（第五章、第六章）一、判断题（对的在括弧中打个“√”，错的在括弧中打个“⨯”）1、对任何无向图，奇其点的个数必然为奇数. （ ）2、对于简单无向图G 而言，其所有顶点的度数和等于其两倍的边数. （ ）3、自补图对应的完全图的边数必为偶数. （ ）4、简单通路就是边不重复的一个点边交替序列.（）5、若图G 是连通的，则其补图G 必然是不连通的.（ ）6、若)(G A 是图G 的邻接矩阵，则矩阵幂次2))((G A 中的对角线上元素)2(ii a 等于它对应的顶点i v 的度)deg(i v .（ ） 7、所有顶点的度都为偶数的无向图一定是欧拉图. （ ）8、含有汉密尔顿路的图就是汉密尔顿图. （ ）9、对连通平面图G 而言，其边数e 、点数v 、面数r 必然满足2=+-r e v . （ ）10、不存在点数、边数奇偶性不同的欧拉图. （）11、完全图5K 不是欧拉图.（ ）12、若图G 是哈密尔顿图，则对G 中任意不相邻的顶点对u,v ，均满足度数之和d (u )+d (v ) ≥ n . （ ）13、不含奇圈（长度为奇数的圈）的无向图一定是二部图. （ ）14、完美匹配一定不是最大匹配. （ ）15、边子集M 是图G 的最大匹配，当且仅当G 中不含M 可扩路. （ ）16、边子集M 是图G 的一个匹配，所谓M 交错路，就是一条通路，满足路上相邻两条边一条在M 中，另一条不在M 中. （ ）二、简单作图题1、画出一个自补图；2、画出一个既有欧拉回路、又有汉密尔顿圈的无向图；3、画出一个有欧拉回路、但没有汉密尔顿圈的无向图；4、画出一个无欧拉回路、但却有汉密尔顿圈的无向图；5、画出一个自对偶图.6、画出含有4个顶点的含圈的所有非同构的连通图.三、填空题1、完全二部图,m n K 中的边数为 .2、对无向图G 而言，若M 是G 的一个匹配，G 中的一条通路P ，满足相邻的两条边交替属于M 和不属于M 这个条件的话，称通路P 为 .3、对无向图G 而言，若M 是G 的一个匹配，则满足条件 称为M 可扩路.4、点不重复的回路（即起、终点重合的通路）叫做 .5、不连通图G 的几个不相连通的子图叫做 .6、删除图G 中某个顶点关联的所有边之后，所剩的图 （选填“连通”或“不连通”）.7、无向图的关联矩阵中，第i 行的元素和等于 .8、有向图的关联矩阵中，第i 行里“1”的个数等于 .9、有向图D 的邻接矩阵A 的k 次幂kA 中，元素()k ij a 表示图中从点i v 到j v 的 有向路的条数.10、如果只关心有向图D 中点i v 到j v 是否存在有向路可达，而不关心路的长度那么我们可以考虑 （选填“关联矩阵”，“邻接矩阵”或“可达矩阵”）.11、对无向图图G 而言，若M 是G 的一个匹配，则M 是图G 的最大匹配当且仅当 . 12、n 个点的图G 的边数若为m ，则它的补图G 的边数为 .四、若无向图G 中恰有两个奇点，试证明这两点之间必有一条路相连.五、试证明完全二部图3,3K 不是平面图.六、选择题1、下列选项中唯一不正确的是（ ）.（A ）无向图的所有顶点的度的和，等于图中边数的2倍.（B ）简单无向图G 是欧拉图，当且仅当它是每一个顶点的度都是偶数的连通图. （C ）点、边、面数分别为v e r 、、的简单连通平面图的欧拉公式是+2v e r -=. （D ）不存在6个顶点的自补图.2、具有6 个顶点，12条边的连通简单平面图中，围成每个面的边数必为( ). （A ）3；（B ） 2；（C ） 4；（D ）5.3、下列关于无向平面图的对偶图的描述，正确论断的个数是（ ）. （1）任一简单平面图G 的对偶图的对偶图一定是G . （2）两个同构的简单连通平面图，它们的对偶图也是同构的. （3）任一平面图的对偶图一定是连通的. （4）简单平面图的对偶图一定也是简单平面图. （5）平面图G 的对偶图一定是平面图.（6）平面图G的面色数一定等于其对偶图的点色数.（A）2；（B）3；（C）4；（D）5.4、下列关于图的描述的选项中，唯一不正确的是（）.（A）子图中的点数小于等于图中的点数（B）补图与原图的点数相等，但边数就不一定相等了（C）同构的两个图的点数对应相等，边数对应相等，但反之未必（D）彼得森（Peterson）图是哈密尔顿图七、求证：若简单无向图G不连通，则其补图G必然连通.八、我们称与其补图同构的简单无向图为自补图。

华东理工大学网络教育学院《政治学原理（专）》课程阶段练习二一、单选选择题１、对国家管理者的最直接、最广泛的监督方式是：（ A ）A、公民监督B、社会团体监督C、舆论监督D、司法独立2、被认为是行政、立法、司法三权之外的“第四种权力”的是：（ B ）A、意识形态B、社会舆论C、专业知识D、道德3、是武力方式的一种大规模的极端形式。

（ D ）A、暴力镇压B、军事政变C、政治暗杀D、战争４、现代官僚制属于下列哪种合法性类型？（ C ）A、传统型B、个人魅力型C、法理型D、礼治型５、下列哪项不属于权利约束权力？（ A ）A、三权分立B、公民监督C、社会团体监督D、舆论监督６、古典民主模式以谁所建立的统治体系为基础发展而来？（ A ）A、雅典B、斯巴达C、罗马D、巴黎７、现在所使用的“民主”一词来自古代的：（ A ）A、希腊语B、阿拉伯语C、英语D、汉语８、发展型民主的观点来源于谁的著作？（ B ）A、约翰•洛克B、约翰•密尔C、让-雅克•卢梭D、杰里米•边沁９、二战后的希腊是哪种民主化道路的典型？（ B ）A、在外部力量帮助下的民主建设B、民主制度的内部重构C、政权内部发起的民主化D、政治反对派力量在终结威权主义政权、设定民主的框架中起到了主要的作用。

1０、最为基本的自由为：（ A ）A、生命自由B、经济自由C、思想自由D、人身自由１１、根本平等是指：（ A ）A、一种坚信人类生而平等的思想，强调人类的生命在价值上是等值的B、社会成员在权利和资格方面的正式身份的平等C、每个人起点相同，生活机会相同D、收入、财富和其他社会利益的平等分配１２、形式平等最显著也是最重要的原则是：（ C ）A、机会平等B、结果平等C、法律平等D、政治平等１３、言论自由、学术自由、出版自由属于：（ C ）A、政治自由B、经济自由C、思想自由D、人身自由１４、我们通常所说的“多劳多得”的原则体现的是：（ D ）A、根本平等B、形式平等C、机会平等D、结果平等１５、追求自由会导致不平等。

华东理⼯⼤学-现代远程教育考题及答案华东理⼯⼤学-现代远程教育考题及答案题号:1 题型:单选题（请在以下⼏个选项中选择唯⼀正确答案）本题分数:5内容:过程考核成绩占总成绩的40%，其中课件点播次数占总成绩的：A、5%B、10%C、15%D、20%标准答案:B学员答案:B本题得分:52625405danx题号:2 题型:单选题（请在以下⼏个选项中选择唯⼀正确答案）本题分数:5内容:登录学⽣平台后如何学习课件？A、在课程列表页⾯点击要学习课件的课程名称——点击“课件点播”按钮B、在课程列表页⾯点击要学习课件的课程名称——点击“导学资料”按钮C、进⼊教学计划查询——点击课程名称D、在课程列表页⾯点击要学习课件的课程名称即可标准答案:A学员答案:A本题得分:52625406danx题号:3 题型:单选题（请在以下⼏个选项中选择唯⼀正确答案）本题分数:5内容:过程考核成绩占总成绩的40%，其中作业成绩占总成绩的：A、5%B、10%C、15%D、20%标准答案:C学员答案:C本题得分:52625407danx题号:4 题型:单选题（请在以下⼏个选项中选择唯⼀正确答案）本题分数:5内容:华东理⼯⼤学⽹络教育学院教育⽅针为：⽹上⾃主学习、实时直播授课、集中⾯授辅导、（）、注重过程考核A、⽹上学习提问B、教师⽹络答疑C、学⽣⽹络提问D、教师⽹上阅卷标准答案:B学员答案:B本题得分:52625408danx题号:5 题型:单选题（请在以下⼏个选项中选择唯⼀正确答案）本题分数:5内容:课程作业计分⽅式为：A、记录两套⽹上作业成绩B、记录两套阶段练习成绩C、记录两套阶段练习和两套⽹上作业成绩D、记录四套阶段练习成绩标准答案:C学员答案:C2625409danx题号:6 题型:单选题（请在以下⼏个选项中选择唯⼀正确答案）本题分数:5内容:根据⽹院规定课程论坛（BBS）发帖数计⼊学⽣学习总分，占课程总分百分⽐为：A、0%B、5%C、10%D、15%标准答案:B学员答案:B本题得分:52625410danx题号:7 题型:单选题（请在以下⼏个选项中选择唯⼀正确答案）本题分数:5内容:远程教育课程作业主要分为⽹上作业和（）A、阶段练习B、纸质作业C、计时作业D、不计时作业标准答案:A学员答案:A本题得分:52625411danx题号:8 题型:单选题（请在以下⼏个选项中选择唯⼀正确答案）本题分数:5内容:在课程论坛中，录⼊帖⼦内容时，（）可以进⾏绘图、编辑公式等操作。

华东理工大学网络学院《审计学》阶段练习一一、单项选择题1.一经签订，就具有法定约束力，委托与受托双方都必须严格遵守。

（）A．审计业务约定书B．管理建议书C．审计工作底稿D．审计计划2. 注册会计师的审计责任是指（）A.按照规定出具财务报表B.按照规定对财务报表发表审计意见C.按照规定出具的管理建议书D.对其助理人员的工作负责3．按照审计的执行地点分类，审计可以分为报送审计和（）审计两种。

A．就地 B．政府C．民间 D．内部4.关于审计风险模型中的其各要素的下列说法中，不正确的是（）A.审计风险是预先设定的B.重大错报风险是评估的C.重大错报风险是注册会计师控制的D.检查风险是注册会计师通过实质性程序控制的5.在编制资产负债表时，注册会计师认为甲公司“存货跌价准备”科目的贷方余额应列示为（）A 错或的抵减项目并单独列示B 在流动负债类下设项目反映C 存货D 计入预提费用项目6.有关抽样风险与非抽样风险的下列表述中，注册会计师不能认同的是（）。

A、信赖不足风险与误拒风险会降低审计效率B、信赖过度风险与误受风险会影响审计效果C、非抽样风险对审计工作的效率和效果都有影响D、审计抽样只与审计风险中的检查风险相关7.对于未函证的应收账款，注册会计师应当执行的最有效的审计程序是（）。

A.重新测试相关的内部控制制度B.抽查有关原始凭证C.进行分析性复核D.审查资产负债表日后的收款情况8.如果被审计单位财务报表就其整体而言是公允的，但因审计范围受到重要的局部限制，无法按照审计准则的要求取得应有的审计证据时，注册会计师应发表（）。

A.否定意见B.保留意见C.无法表示意见D.带强调事项段的无保留意见9.下列审计证据中，既属于书面证据，又属于内部证据的有（）A.应收账款函证的回函B.存货盘点表C.注册会计师编制的折旧计算表D.材料入库单10.（）是被审计单位为了合理保证财务报表的可靠性、经营的效率和效果以及对法律法规的遵循，由治理层、管理层和其他人员设计和执行的政策和程序。

华东理工大学网络教育学院（全部答在答题纸上，请写清题号，反面可用。

试卷与答题纸分开交）行政组织学_201906_模拟卷1_答案一、单选题（共10题,每题2分,共20分）1. 在中国这样一个多民族国家中，解决民族问题的理想方式是实行（）（2分）A.民族自决B.联邦制C.民族区域自治D.民族独立.★标准答案：C2. 行政组织中两个以上的人或群团为达到各自目的而形成的彼此对立、争执与争斗的关系，被称为（）（2分）A.组织病态B.组织摩擦C.组织危机D.组织阻碍.★标准答案：B3. 西方行政学的创始人是（）（2分）A.泰勒B.威尔逊C.密尔D.韦伯.★标准答案：B4. 最明显地影响行政组织的宗教环境是（）（2分）A.政教合一B.政教分离C.宗教自由D.宗教独立.★标准答案：A5. 行政管理的行为主体是（）（2分）A.行政组织B.立法组织C.司法组织D.群团组织.★标准答案：A6. 在资本主义社会早期，公共事务极其简单，政府充当的角色主要是（）（2分）A.全能计划者B.守夜警察C.社会保姆D.道德领袖.★标准答案：B7. 直接决定着行政组织的性质和变化的是（）（2分）A.生产关系B.政党制度C.生产力D.社会状况.★标准答案：A 8. 道德标准属于行政组织国内环境的（）（2分）A.政治部分B.法制部分C.文化部分D.群团部分.★标准答案：C9. 美国各州州长的产生取决于（）（2分）A.联邦政府B.总统C.国会D.各州选民.★标准答案：D10. 行政组织微观纵向分工所形成的职责关系中，中层行政组织为( ) （2分）A.决策层B.管理层C.技术操作层D.协调指挥层.★标准答案：D二、多选题（共5题,每题4分,共20分）1. 行政组织内部的群团，根据其功能发挥情况可以分为（）（4分）A.有效群团B.正式群团C.无效群团D.非正式集团E.中性群团.★标准答案：A,C2. 古希腊、古罗马行政组织思想最为典型的代表人物是（）（4分）A.柏拉图B.梭伦C.亚里士多德D.渥大维E.斯巴达.★标准答案：A,C3. 孔子提出以“礼”为核心的行政思想，主要强调（）（4分）A.等级秩序B.以人为本C.专业化分工D.组织内部和谐E.选拔正直的人参与管理.★标准答案：A,D,E4. 巴纳德认为，组织作为一个协作系统，必须具备哪几个要素?（）（4分）A.共同的目标B.经费C.协作的意愿D.权责结构E.信息.★标准答案：A,C,E5. 南京国民政府时期，由国民党中央执委会选任的有（）（4分）A.国民政府主席B.国民政府委员会委员C.行政院院长D.行政院副院长E.立法院院长.★标准答案：A,B,C,D,E三、名词解释（共4题,每题8分,共32分）1. 政府职能市场化（8分）★标准答案：所谓政府职能市场化，是指在对政府职能重新界定后，将原来属于政府的一部分职能交给社会组织或民间团体去承担，由市场机制发挥作用。

华东理工大学网络教育学院《电力工程概论》阶段练习三试卷一、选择题1.电力系统潮流计算中变压器采用τ型等值电路，而不采用T型等值电路的原因是（）。

A．采用τ型等值电路比采用T型等值电路精确B．采用τ型等值电路在变压器变比改变时，便于电力系统节点导纳矩阵的修改C．采用采用τ型等值电路可以减少电力系统的节点总数D．采用采用τ型等值电路可以增加电力系统的节点总数2.对于自耦变压器，等值电路中各绕组的电阻，下述说法中正确的是（）。

A．等值电路中各绕组的电阻，是各绕组实际电阻按照变压器变比归算到同一电压等级的电阻值B．等值电路中各绕组的电阻就是各绕组的实际电阻C．等值电路中各绕组的电阻是各绕组的等效电阻归算到同一电压等级的电阻值D．等值电路中各绕组的电阻一定为正值，因为绕组总有电阻存在3.在多电压等级电磁环网中，改变变压器的变比（）。

A．主要改变无功功率分布B．主要改变有功功率分布C．改变有功功率分布和无功功率分布D．功率分布不变4.影响电力系统频率高低的主要因素是（）。

A．电力系统的有功平衡关系B．电力系统的无功平衡关系C．电力系统的潮流分布D．电力系统的网络结构5.关于电力系统频率的调整，下述说法中错误的是（）。

A．电力系统频率调整的基本原理是根据电力系统有功负荷的变化，改变发电机的有功出力，维持电力系统在所要求频率下的有功功率平衡B．电力系统频率的一次调整是针对第一类负荷变化进行的，它通过发电机组装设的调速器来实现，但一次调整不能实现频率的无差调节C．电力系统频率的二次调整结束后，不管频率是否回到负荷变化前的数值，负荷的变化量均为调频机组所承担D．在无差调节方式下，二次调整结束后，负荷的变化全部为调频机组所承担6.关于电力系统的电压调整，下述说法中正确的是（）。

A．只要保证电力系统在所要求的电压水平下的无功功率平衡，就可以将电力系统中所有用电设备的电压限制在允许的范围B．要维持电力系统用电设备的电压在允许的范围，首要的条件是要满足在所要求的电压水平下的电力系统的无功率平衡C．在任何情况下都可以通过改变变压器变比，将电力系统中所有用电设备的电压限制在允许范围D．当无功负荷变化时，不必改变系统无功电源的总出力，只要调整电力系统的无功潮流分布总可以将电力系统用电设备的电压控制在允许范围7.对于有功电源过剩，但无功不足引起电压水平偏低的电力系统，应优先采用的调压措施是（）。