模拟题五及答案
2020年全国高中学生化学奥赛(省级赛区)模拟试题5参考答案
第 1题（8分）1-1 水煤气由焦炭与水蒸汽在高温下反应制得，是重要的工业燃料。
1-1-1写出制备水煤气的化学方程式。
1-1-2 经验证明，水蒸汽的转化率约为 75%且其中还混有少量空气。
实际生产中，水与焦炭的物质的量之比为 1.27:1，那么水蒸气中允许的空气含量最大为多少？（设空气中氧气与氮气的体积比为 1:4）第二题（6分）2-1 将2,6-二甲基吡啶与三氟化硼混合，会发生Lewis酸碱加和反应。
画出生成物的结构简式并标出形式电荷。
2-2 然而，将2,6-二甲基吡啶与三(五氟苯基)硼混合，氮、硼原子仅相互靠近而未成键，形成“失配Lewis对”（Frustrated Lewis Pair）。
在该体系中通入氢气，可得化合物A：此时向体系中加入丙酮并持续通入氢气，可生成异丙醇，从而实现了不饱和键的温和加氢：2-2-1 说明是什么效应导致了二者未能发生正常的Lewis酸碱加和反应。
第3题（15分）3-1 将固态的亚硫酸氢钠加热或向亚硫酸钠的水溶液中通入过量SO2可以制得化合物X （190.1g·mol-1）。
X为白色或微黄色粉末，具有一定还原性，广泛用作食品添加剂。
写出X的化学式并画出其阴离子的结构示意图。
但其中起主要氧化作用的是橙黄色化合物M。
生成M的同时还生成了氯气。
3-2-1写出生成M的化学方程式。
3-2-2写出金溶于王水的化学方程式。
3-2-3 反王水，顾名思义，是浓硝酸与浓盐酸配以3:1的比例制成的混合溶液，其中存在着氧化性极强的[N3O8Cl]2-离子，该离子含有一个六元环。
试画出其极限式。
第4题（11分）将乙烯通入红棕色的K2[PtCl4]溶液中，会析出金黄色的K[Pt(C2H4)Cl3]·H2O 沉淀。
由于它是由W.C.Zeise发现的首个以烯烃为配体的过渡金属配合物，故称它为Zeise 盐。
室温下它属于四方晶系，晶胞参数a=950.6pm，c=1412.1pm。
自考西方经济学模拟试题及答案5
自考西方经济学模拟试题及答案【五】一、单项选择题1.一笔资金的正常利润视为（B）A.会计成本B.机会成本C.显性成本D.隐性成本2.厂商的销售收入与机会成本之间的差额是（B）A.会计利润B.经济利润C.正常利润D.销售利润3.经济利润－会计利润=（D）A.会计成本B.机会成本C.显性成本D.隐性成本4.假定厂商生产某种一单位商品需投入不变要素资本投入5单位以及l单位可变生产要素劳动，而一单位资本和劳动投入的价格分别为40和20，已知生产商品的总产量为10单位，则生产该商品的总成本为（C）A.220B.200C.400D.22005.已知某产品总产量为100单位，其中平均不变成本为0.2元，平均可变成本为0.5元，则该批产品的总成本为（B）A.7元B.70元C.30元D.50元6.短期不变成本（C）A.是随着产量增加而递增的曲线B.是随着产量增加而递减的曲线C.是一条平行于产量轴的直线D.是一条包络线7.平均可变成本曲线呈现U性特征，其根源在于（B）A.边际效用递减规律B.边际收益递减规律C.边际技术替代率递减规律D.生产由规模经济到规模不经济8.平均不变成本（B）A.是随着产量增加而递增的曲线B.是随着产量增加而递减的曲线C.是一条平行于产量轴的直线D.是一条包络线9.边际成本曲线与平均成本曲线的交点是（B）A.边际成本曲线的最低点B.平均成本曲线的最低点C.边际成本曲线的最高点D.平均成本曲线的最高点10.平均产量的最大值点对应着平均可变成本的（B）A.最高点B.最低点C.0点D.以上都有可能11.短期总成本曲线在纵轴上的截距是（A）A：短期不变成本B.短期可变成本C.边际成本D.平均成本12.厂商的长期平均成本曲线（C）A.在所有短期平均成本曲线的上方，B.是所有短期平均成本曲线的总和C.是所有短期平均成本曲线的包络曲线D.是所有短期平均成本曲线的最低点的连线1 3.如果厂商的产量增加一倍，而成本增加大于一倍，我们说厂商的生产存在（B）A.规模经济B.规模不经济C.规模经济递减D.规模经济递增14.长期边际成本曲线上的点是（B）A.是长期总成本曲线的平均值B.是长期总成本曲线的斜率C.长期平均成本曲线的斜率D.以上都不正确1 5.假设厂商销售量从100单位增加到105单位，总收益从200元增加到220，则它的边际收益为（B）A.20元B.4元C.220元D.5元1 6.在价格不变的条件下，厂商的平均收益曲线与边际收益曲线（C）A.平行B.相交C.重合D.垂直1 7.在厂商面临一条向右下方倾斜的需求曲线时，厂商的边际收益曲线位于平均收益曲线的（B）A.上方B.下方C.重合D.平行18.如果厂商的边际收益小于边际成本，则厂商应该（B）A.增加生产B.减少生产C.维持生产规模D.停产二、多项选择题1.下列成本中属于显性成本的是（ABD）A.雇佣工人的支出B.购买原材料的支出C.使用厂商自己拥有的资金作为支出而节省的支付给银行的利息D.购买生产设备的支出E.以上都包括2.下列说法正确的是（ABD）A.经济学中的成本是所有显性成本和隐性成本的总和B.在经济学家看来，一笔资金的正常利润也应该包含在成本之中C.经济学中所指的利润包含正常利润D.经济学中所指的利润指超额利润E.以上都正确3.下列公式正确的是（ACDE）A.TC=FC+VCB.FC=TC／QC.AC=TC／QD.AFC=FC／QE.AVC=VC／Q4.下列说法正确的是（AE）A.可变成本是随着产量增加而递增的曲线B.可变成本是随着产量增加而递减的曲线C.不变成本是随着产量增加而递增的曲线D.不变成本是随着产量增加而递减的曲线E.总成本是随着产量增加而递增的曲线5.下列说法正确的是（ABC）A.在边际成本递减的阶段，总成本曲线越来越平缓B.在边际成本递减的阶段，可变成本曲线越来越平缓C.边际成本曲线与平均可变成本曲线相交于平均可变成本曲线的最低点D.在边际成本递减的阶段，总成本曲线越来越陡E.在边际成本递减的阶段，可变成本曲线越来越陡6.下列属于规模经济的原因是（ABCDE）A.规模扩大有利于专业分工B.规模扩大有利于厂商充分地开发和利用副产C.规模扩大使厂商生产要素的购买拥有更多的优势D.规模扩大使厂商产品的销售拥有更多的优势.E.规模扩大使厂商可以使用更加先进的生产技术7.下列说法正确的是（ACE）A.长期边际成本曲线的形状呈现为U型B.长期边际成本曲线先递增后递减C.长期边际成本曲线先递减后递增D.长期边际成本曲线是所有短期边际成本曲线的包络曲线E.长期边际成本曲线不是所有短期边际成本曲线的包络曲线8.下列说法正确的是（ABCDE）A.在厂商面对的价格保持不变时，厂商面临的需求曲线是一条平行于数量轴的直线B.在价格不变时，总收益曲线是一条从原点出发的向右上方倾斜的直线C.在价格不变时，厂商的平均收益曲线是一条等于价格的水平直线D.在价格不变时，厂商的平均收益曲线与边际收益曲线重合E.以上都正确9.在厂商面临一条向右下方倾斜的需求曲线时，下列说法正确的是（ABDE）A.厂商的平均收益曲线等于价格B.厂商的平均收益曲线与厂商的需求曲线重合C.厂商的平均收益曲线是一条等于价格的水平直线D.边际收益曲线是一条位于平均收益曲线下方的曲线E.总收益曲线是一条从原点出发的先增加后递减的曲线三、名词解释1.机会成本答案：某项资源未能得到充分利用而放弃掉的机会所带来的成本。
模拟题五(有答案)
模拟题（五）一、是非题1．目前市场上的DVD播放机，是采用MPEG-2的标准制造的高清晰视频图像播放器。
2．二进制转换成八进制数的方法是：将二进制数从小数点开始，对二进制数整数部分向左每三位分成一组，对二进制小数部分向右每三位分成一组，不足三位的分别向高位或低位补0凑成3位。
每一组有3位二进制数，分别转换成八进制数中的一个数字，全部按序连接起来即可。
( ) 3．在word2003中，可右击工具栏或菜单栏的任意位置，在弹出的快捷菜单中选择需要的工具栏。
4．HTML语言的标记是不区分大小写的。
5．被动攻击因不对传输的信息作任何修改，因而是难以检测的，所以抗击这种攻击的重点在于预防而非检测。
6．有些计算机病毒变种可以使检测、消除该变种源病毒的反病毒软件失去效能。
7．任务栏上的音量控制图标无法取消显示。
8．在word2003中，对文档进行修改后做了保存，然后关闭，又后悔了刚才的修改，可以使用“撤消”命令撤消刚才的操作。
９．在Word中，一个文档中的页眉页脚总是相同的。
F10．Excel2003公式或函数中某个数字有问题时，单元格内会显示“#NUM！”。
11．在powerpoint2003中，幻灯片中的所有对象都可以添加动画效果。
12．在计算机发展过程中，人们先后发明计算机依次是：微型机-小型机-大型机-巨型机。
F 13．Excel2003批注中的字体及大小无法修改，只能使用默认设置。
（）14．HTML对格式要求并不严格，当HTML文件被浏览器扫描时，所有包含在文件中的空格、车键将被忽略。
（）15．只有将站点发布到WEB服务器，并设置了网站的frontpage服务器扩展后，计数器才能正确显示。
（）16．特洛伊木马是在计算机隐藏的作案的计算机程序，在计算机仍能完成原有任务的前提下，执行非授权的功能。
（）17．在“画图”程序中，可以直接将绘制的图像设置为墙纸。
（）18．在Word 2003文档中使用自选图形绘制好图形后，可在其中添加文字。
中石油职称英语大纲模拟试题5及答案
模拟试题五I. V ocabularyDirections: There are 20 incomplete sentences in this part. For each sentence there are four choices marked A, B, C and D. Choose the ONE answer that best completes the sentence and mark your answer on the Answer Sheet.1. He is a man you can rely on. He never goes back on his __A. wordB. wordsC. permissionD. saying2. After second thought, she a better solution.A. came up withB. added up toC. put up withD. made up for3. The club has ~ a new rule allowing women to join.A. brought forthB. associated withC. turned overD. laid down4. The performance will begin __ at eight thirty.A. preciselyB. consequentlyC. accordinglyD. exceedingly5. It's very discourteous to __ during some one's conversation.A. inspectB. interruptC. interfereD. instruct6. His joke went too far. It was more than 1 could __A. get rid ofB. put up withC. keep up withD. do away with7. Will all those the proposal raise their hands?A. in relation toB. in excess ofC. in contrast toD. in favor of8. At the gathering, he talked __ about the matter, dampening everyones spirits.A. in detailB. with easeC. on endD. in a confusing way9. We cannot always the wind, so new windmills should be so designed that they can also be driven by water.A. hang onB. count onC. hold onD. come on10. I don't want to you in if you are what you say.A. runB. catchC. makeD. take11. Mr. Brown is a old man and all his neighbors are __ to him.A. respectful...respectableB. respectable...respectiveC. respectable...respectfulD. respective...respectable12. I wish my son would stop __ and do something realistic.A. hanging aboutB. hanging onC. hanging upD. hanging off13. There are some flowers on the desk.A. artificialB. falseC. unrealD. untrue14. We all can't __ why she married a man like this.A. reason outB. figure outC. make believeD. take in15. John wants to dispose his old car and buy a new one.A. onB. inC. ofD. to16. He slept in the __ of the trees on such a hot day.A. shadeB. shelterC. shadowD. shield17. Ted agreed to __ the strike if the company would satisfy the demand of the workers.A. call outB. call toC. call offD. call on18.We are not to veto(:~,~__) our own proposals.A. likelyB. possibleC. probableD. potential19. He agreed with the plan in , but thought that in practice it would not work.A. attitudeB. approachC. viewpointD. principle20. The conversation was so interesting that we were __ of the lateness of the hour.A. negligibleB. inattentiveC. irrelevantD. obliviousII. Grammatical StructureDirections: There are 20 incomplete sentences in this part. For each sentence there are four choices marked A, B, C and D. Choose the ONE answer that best completes the sentence and mark your answer on the Answer Sheet.21. nothing more to discuss, the secretary-general got to his feet, said goodbye and left the room.A. There wasB. BeingC. There beingD. As there being22. It was urgent that he __ her immediately.A. callsB. calledC. callD. would call23. the size and nature of a business, its main goal is to earn a profit.A. WhateverB. WhicheverC. WhereasD. Because24. What's the matter? I smell something __A. bumB. bumsC. being burnedD. burning25. Mathematics as well as other subjects __ a science.A. wasB. isC. areD. belong to26. he was a regular customer, the boss allowed 10% discount off the prices of the goods.A. GivingB. Given thatC. Giving thatD. To give that27. It was during the 1920's __ the friendship between Hemingway and Fitzgerald reached its highest point.A. whenB. thatC. beforeD. after28. dwell on her past.A. Little need sheB. Little did she needC. Little she neededD. Little she did need29. a fine day, I decided to go for an outing.A. BeingB. Having beenC. It beingD. How30. The car seventy miles per hour until it reaches the riverside at about ten o'clock tonight.A. goesB. will goC. wentD. will be going31. Many a time __ not to play with fire but he turns a deaf ear to the warnings.A. the child being toldB. the child has been toldC. has been told the childD. has the child been told32. I would rather out to look for a job instead of moping around here everyday.A. to goB. goingC. wentD. go33. is still a controversial issue.A. If he is the right person for the jobB. That he is the right person for the jobC. Whether he is the right person for the jobD. He is the right person for the job34. Tom __ my letter; otherwise he would have replied before now.A. ought not have receivedB. shouldn't have receivedC. has been receivedD. couldn't have received35. You'll soon get used to __ a large breakfast in England.A. eatB. it that you eatC. eatingD. you eat36. I left very early last night, but I wish I __ so early.A. didn't leaveB. hadn't leftC. haven't leftD. couldn't leave37. The cottage will be cold. Make sure __ the heater.A. you lightB. for lightingC. lightingD. you'll light38. "How many from your class went abroad? .... but one".A. AnyB. SomeC. AllD. Most39. Heating into the students' dormitories now.A. is puttingB. is being putC. is been putD. has been putting40.He has got himself into a dangerous situation .~ he has no control.A. becauseB. asC. over thatD. over which1II. Reading ComprehensionSection ADirections: There are 5 passages in this section. Each passage is followed by 4 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.Questions 41 to 44 are based on the following passage:American Indians played a central role in the war known as the American Revolution. To them, however, the dispute between the' colonists and England was peripheral. For American Indians the conflict was a war for American Indian independence, and whichever side they chose, they lost it. Mary Brant was a powerful influence among the Iroquois. She was a Mohawk, the leader of the society of all Iroquois matrons, and the widow of Sir William Johnson, Superintendent of Indian Affairs. Her brother, Joseph Brant, is the best known American Indian warrior of the Revolution, yet she may have exerted even more influence in the confederacy than he did. She used her influence to keep the western tribes of Iroquois loyal to the English king, George Ili. When the colonists won the war, she and her tribe had to abandon their lands and retreat to Canada. On the other side, Nancy Ward held positions of authority in the Cherokee nation. She had fought as a warrior in the war against the Creeks and as a reward for her heroism was made "Beloved Woman" of the tribe. This office made her chief of the women's council and a member of the council of chiefs. She was friendly with the white settlers and supported the Patriots during the Revolution. Yet the Cherokees too lost their land.41. What is the main point the author makes in the passage?A. Siding with the English in the Revolution helped American Indians regain their land.B. At the time of the Revolution the Superintendent of Indian Affairs had little power.C. Regardless of whom they supported in the Revolution, American Indians lost their land.D. The outcome of the Revolution was largely determined by American Indian women.42. The word "it" in line 4 refers to ~A. sideB. revolutionC. disputeD. independence43. How did Ward gain her position of authority?A. By bravery in battle.B. By marriage to a chief.C. By joining the confederacy.D. By being bom into a powerful family.44. According to the passage, what did Mary Brant and Nancy Ward had in common?A. Each was called "Beloved Woman" by her tribe.B. Each influenced her tribe's role in the American Revolution.C. Each lost a brother in the American Revolution.D. Each went to England after the American Revolution.Questions 45 to 48 are based on the following passage:More people than ever are drinking coffee these days--but in smaller quantities than they used to. Some manufacturers of coffee makers are trying to take advantage of this trend by developing diminutive machines that brew smaller amounts of coffee. Two US appliance companies-Black & Decker, based in Towson, Maryland, and Toastmaster Inc. of Columbia, Missouri-have recently introduced "drip" coffee makers that brew one or two cupservings of coffee. Both of the products brew the coffee directly into a cup or mug, eliminating the need for a separate carafe. Since many people make a pot of coffee in the morning but drink only a single cup, the new coffee makers should reduce the wasted coffee. Black & Decker's Cup-at-a-Time costs $27, while Toastmaster's Coffee Break Retails for $20. Black & Decker also makes a coffee maker that drips coffee directly into a carry-around thermal carafe. The carafe, a glass vacuum bottle, is supposed to keep the coffee fresh for hours. The product, called the Thermal Carafe Coffee-maker, comes with a built-in lid that opens during the brewing process and close when it is completed. There are several models, including one that firs under the counter, ranging from $60 to $110 in price.45. The main purpose of the text is toA. introduce a new trend of drinking coffeeB. introduce new coffee makersC. introduce two U.S. appliance companiesD. introduce the new coffee industry46. The advantage of "drip" coffee makers shown in the text is thatA. they are much more economicB. they can produce only one cupC. they are more convenient and easier to operateD. they are more economical47. According to the passage, a thermal carafe is necessary when the coffee isA. preservedB. producedC. manufacturedD. brewed48. Which of the following statements can be inferred from the passage?A. People used to drink coffee in larger quantities.B. It is essential to attach a separate carafe, while "drip" coffee makers are applied.C. People used to make a pot of coffee in the morning and drink it up.D. The new coffee makers usually cost less than before.Questions 49 to 52 are based on the following passage:No one expressed this attitude more strongly than Noah Webster (1758- 1843). Born near Hartford, Connecticut, he received his education at Yale College and later began to practise law. But business in this profession was slow, and he was forced to turn to teaching. As a teacher, he soon discovered that the English school books then in use were unsatisfactory, and the American Revolution reduced the supply of such books as there were. Webster therefore began to work on three simple books on English, a spelling book, a grammar, and a reader, and these were the first books of their kind to be published in this country. The success of the first part was surprisingly great. It was soon issued again under the title THE AMERICAN SPELLING BOOK, and in this form about 80 million copies were sold during the next hundred years. From a profit of less than one cent a copy, Webster got most of his income for the rest of his life. Not only did the little book have great influence on many generations of school children, but it also had the effect or turning its author's attention to questions of language. In 1806 he produced a small dictionary, and this was followed by his greatest work, AN AMERICAN DICTIONARY OF THE ENGLISH LANGUAGE, published in two volumes in1828. In both of these works and in many smaller writings he had one purpose: to show that the English language in his country was a truly American thing, developing in its own special way and deserving to be considered from an independent, American point of view. As he himself wrote," It is not only important, but in a degree necessary, that the people of this 'country should have an AMERICAN DICTIONARY of the English language; for, although the body of the language is the same as in England...some differences exist .... No person in this country will be satisfied with the English definitions of the words congress, senate, assembly, court, and so forth, for although these are words used in England, yet theyare applied in this country to express ideas which they do not express in that country." By giving American meanings and American pronunciation, by adopting a number of American spellings, and especially by introducing quotations from American authors beside those from English literature, he was able, to a great extent, to justify the title of his work. If, after a hundred years, some people still doubt the existence of a separate American language, his efforts, nevertheless, have left a lasting mark on the language of his country.49. Webster first tried to earn his living in the field ofA. educationB. journalismC. lawD. medicine50. Apparently Webster published his first books while he was a __A. teacherB. studentC. lawyerD. doctor51. This article could be entitledA. Noah Webster and American English SpellingB. Noah Webster, the author of An American Dictionary of the English LanguageC. Noah WebsterD. Noah Webster and American English Grammar52. According to the article, Webster __A. had created American English and its usagesB. had discovered American English and improved itC. had tried his best and left a milestone on the language of his countryD. had left a language which was not used in England.Questions 53 to 56 are based on the following passage:Albert Schweitzer was born in 1875 in Alsace. At that time, it was a part of Germany. His generous spirit was first awakened through his training as a Lutheran minister. Besides gaining a reputation as a preacher, he also became respected for his ability to play the organ. He was a man of many talents. His concern for other people turned his attention to medicine. He had also acquired doctoral degrees in philosophy and music. ,His wife took an interest in medicine too and became a nurse. Many people thought that he should remain and lecture in Europe to have a strong impact on Western civilization. Though he listened to their suggestions, he ultimately decided to follow his own conscience. This led him to Africa. Albert had felt that all men should accept the responsibility of helping others. He felt particularly concerned for black Africans who had been exploited by white men. He earned the money he needed by performing on the organ and by lecturing. With this money he bought equipment and opened a hospital in Africa. He was a man of great strength who faced great problems with courage. The threat of war, the reality of imprisonment during World War, one as a German citizen, and the unbearable heat in Africa did not deter him at all. He believed that man could overcome these obstacles if he had a sense of idealism. He died in 1965.53. He had talents forA. training his wife to be a nurse, giving concert and lecturingB. giving medical care, lecturing, playing the organC. taking care of sick people, fighting as a soldier, lecturingD. giving concert, making equipment, helping others54. In spite of people's suggestions, Albert decided to go to AfricaA. because he was born thereB. because he wanted to help others particularly black Africans who had been exploited by white menC. because he wanted to give a concert to African peopleD. because he wanted to' make money there55. Why did the author think he was a man of great strength?A. He always faced great problems with courage.B. The threat of war and the reality of imprisonment during World War didn't discourage him.C. The unbearable heat in Africa did not deter him at all.D. All of the above.56. Albert Schweitzer lived to beA. 70 years oldB. 80 years oldC. 90 years oldD. 100 years oldQuestions 57 to 60 are based on the following passage:The oldest and simplest method, then of describing differences in personality was to classify people according to types, and such a system is called a Typology. A famous example of this method was set forth in Greece about the year 400 B. C. A physician named Hippocrates theorized that there were four fluids, or humors, in the body. Corresponding to each humor, he believed, there existed a definite type of personality.The four humors were blood, yellow bile, black bile, and phlegm. A person in whom all four humors were in perfect balance had a harmonious personality. If a person had too much blood, he was called sanguine (血红色), or cheerful and optimistic. Someone with too much yellow bile was choleric, or irritable and easily angered. Too much black bile made a person melancholy, or depressed and pessimistic. An oversupply of phlegm caused a human being to be phlegmatic, or slow and unfeeling. Scientists have long since discarded Hippocrates' fluid theory. But the names of the humors, corresponding to these temperaments, have survived and are still useful, to some extent, in describing personality.Other features of people, such as their faces and physics, have also been used to classify personality. Today, however, personality theories and classifications may also include factors such as heredity (遗传特征), the environment, intelligence, and emotional needs. Psychology, biology, and sociology are involved in these theories. Because of the complexity of human personality, present day theories are often very different from one another. Psychologists vary in their ideas about what is most important in determining personality.57. According to Hippocrates' fluid theory, a man with too much phlegm will be __A. optimisticB. easily angeredC. unexcitableD. pessimistic58. The main idea of this passage is about __A. the complicated factors in determining one's personalityB. Hippocrates' fluid theory and its developmentC. the past and today of personality classifications and theoriesD. different personalities and their details59. At present, psychologists __A. have common opinion about personality theories and classificationsB. use biology, archaeology and sociology to study personality theoriesC. have abandoned Hippocrates' fluid theory entirelyD. all agree that human beings are characterized with complex personalities60. According to this passage the factors which are still NOT used to classify personality areA. one's born features and needs of love and successB. one's height and weightC. one's hobbies and idealsD. the environment and intelligenceSection BDirections: There are 10 blanks in the following passage. For each blank there are four choices marked A, B, C and D. You should choose the ONE that best fits into the passage. Then mark your answer on the Answer Sheet.Music comes in many forms; most countries have a style of their own. 61 the turn of the century when jazzwas bom, America had no prominent style fits own. No one knows exactly when jazz was 62 , or by whom. But it began to be heard in the early 1900s.Jazz is Americans contribution to 63 music. In contrast to classical music, which follows formal European traditions, jazz is spontaneous and free form. It bubbles with energy, 64 the moods, interests, and emotions of the people. In the 1920s jazz sounded like America, and 65 it does today. The origins of this music are as interesting as the music 66 .American Negroes, or blacks, as they are called today, were the jazz pioneers .They were brought to Southern States 67 slaves. They were sold to plantation owners and forced to work long hours. When a Negro died his friend and relatives 68 a procession to carry the body to the cemetery. In New Orleans, a band often accompanied the procession .On the way to the cemetery the band played slow, solemn music suited to the occasion. 69 on the way home the mood changed. Spirits lifted. Death had removed one of their relations ,but the living were glad to be alive. The band played happy music, improvising (~ll~,,) on both the harmony and the melody of the tunes 70 at the funeral. This music made everyone want to once. It was an early form of jazz.61. A. By B. At C. In D. On62. A. discovered B. acted C. invented D. designed63. A. classical B. sacred C. popular D. light64. A. expressing B. explaining C. exposing D. illustrating65. A. as B. so C. either D. neither66. A. concerned B .itself C. available D. oneself67. A. for B. as C. with D. by68. A. demonstrated B. composed C. hosted D. formed69. A. Even B. Therefore C. Furthermore D. But70. A. whistled B. sung c. presented D. showedIV. TranslationDirections: There is 1 passage in this part of the test. You are to translate the passages into Chinese on your Answer Sheet.71.One of the rules for being rich is to avoid frivolous temptations. Surely there are many other rules for the purpose. One of them is to stay in school or, if out of school, go back to it for continuing education. It has never been easier to get an education but you will learn something worth the time and effort. College costs have been rising gradually relative to family income level for more than twenty years. However the rate of return on a college education has been rising as well, making the investment a good deal. Meanwhile, the cost of self-education has fallen with the multitude of sources of knowledge and information available on CD-ROMs and Internet. In addition, to choose a good major for education is also important. History and politics professors earn less than accounting professor, much less than businessmen. For that reason, accounting professors can expect to earn much less than their students who major in business.模拟试题五参考答案及局部试题答案解析一、答案I. Vocabulary1-20 AADAB BDCBA CAABC ACADDII. Grammatical Structure21-40 CCADB BBACD DDCDC BACBDIII. Reading Comprehension41-60 CDABB DAACA CCBBD CCCDC61-70 BCCAA BBDDCIV. Translation 翻译答案略，请参考2004年版通用英语选读相关课文。
信息安全等级测评师模拟试题(五)有答案
信息安全等级测评师模拟试题（四）一、判断题（10×1=10分）1、路由器仅可以对某个端口的访问情况进行屏蔽。
（×）2、三级信息系统应采取双因子认证对管理用户身份进行鉴别。
（√）3、ARP地址欺骗分为对网络设备ARP表的欺骗和对内网PC的网关欺骗（√）4、在windows系统中，重要目录不对everyone用户开放。
（√）5、一个企事业单位的不同vlan之间可直接进行通信，和外网则不可以（×）6、三级系统的配置文件权限值不能大于644，可执行文件不能大于755（√）7、病毒、木马、蠕虫都属于恶意代码。
（√）8、三级系统的鉴别信息要求至少8位，并有复杂度要求。
（×）9、网络设备的某条不合格，则此项标准可直接判断为不合格。
（×）10、三级系统应避免将重要网段部署在网络边界处且直接连接外部系统（×）二、单项选择题（15×2=30分）1、假如你向一台远程主机发送特定的数据包，却不想远程主机响应你的数据包。
这时你使用哪一种类型的进攻手段？（ B ）A、缓冲区溢出B、地址欺骗C、拒绝服务D、暴力攻击2、你有一个共享文件夹，你将它的NTFS权限设置为sam用户可以修改，共享权限设置为sam用户可以读取，当sam从网络访问这个共享文件夹的时候，他有什么样的权限？（ A ）A、读取B、写入C、修改D、完全控制3、入侵检测系统在进行信号分析时，一般通过三种常用的技术手段，以下哪一种不属于通常的三种技术手段：（ D ）A．模式匹配 B．统计分析C．完整性分析 D．密文分析4、攻击是指借助于客户机/服务器技术，将多个计算机联合起来作为攻击平台，对一个或多个目标发动DoS攻击，从而成倍地提高拒绝服务攻击的威力。
（ C ）A．缓冲区溢出攻击 B．拒绝服务C．分布式拒绝服务 D．口令攻击5、信息安全需求不包括。
( D )A.保密性、完整性B.可用性、可控性C.不可否认性D. 语义正确性6、下面属于被动攻击的手段是。
土木工程材料模拟试题及答案5
土木工程材料模拟试题(5）一、填空题(本大题共10小题,每空1分，共20分)1。
以普通混凝土组成材料为基材，加入各种纤维而形成的复合材料称为纤维混凝土.其中掺加纤维的目的是提高混凝土的______ 性和______性,以防止或减少开裂。
2。
钢材中____ 元素含量较高时，易导致钢材在__________温度范围以下呈脆性，这称为钢材的低温冷脆性.3。
在实际工程中，对建筑钢材进行性能检验时，通常检验___________和___________两方面的性能。
4。
混凝土工程中采用间断级配骨料时,其堆积空隙率较_________，用来配制砼时应选用较______砂率。
5.普通混凝土采用蒸汽养护时，可提高混凝土_________强度,但__________强度不一定提高。
6。
石灰的耐水性__________，用石灰和粘土配制的灰土耐水性较___________。
7.进行砂浆抗压强度检验时，试件标准尺寸为______________；若测得某组砂浆试件的极限荷载值分别为55。
0kN、52。
0kN、42.0kN，则该组砂浆的强度评定值为__________MPa。
8.活性混合材料中含有活性_______和_______成分.9. 木材易受_______ 和_______侵害而腐朽变质.10。
大体积混凝土工程应选用_____________水泥,在允许条件下，选用的粗集料公称粒径应尽可能______。
二、单项选择题（本大题共20小题，每小题1分，共20分）在每小题列出的四个备选项中只有一个是符合题目要求的,请将其代码填写在题后的括号内.错选、多选或未选均无分。
1。
下列哪种材料保温性能最好？( )A。
大孔混凝土 B。
全轻混凝土C.加气混凝土 D。
砂轻混凝土2.在碳素钢中掺入少量合金元素的主要目的是（）。
A。
改善塑性、韧性 B。
提高强度、硬度C.改善性能、提高强度 D.延长使用寿命3。
以下哪种钢筋材料不宜用于预应力钢筋混凝土结构中？（）A。
物理奥赛复赛模拟试题(五)与答案
物理奥赛复赛模拟试题(五)与答案题1：如图1所示，四个质量均为m 的质点，用同样长度且不可伸长的轻 绳联结成菱形ABCD 。
静止放在水平光滑的桌面上。
若突然给质点A 一个历时极短沿CA 方向的冲击。
当冲击结束的时刻，质点A 的速度为v ，其它质点也获得一定速度。
∠BAD=2a(a<π/4)。
求：此质点系统受冲击后所具有的总动量和总能量。
分析与解答：解题时应把握“对称性”这一特征，应用动量定理求解，注意动量的矢量性。
由对称性知，C 点的速度必定沿CA 方向，设大小为c v 。
D 的速度可以分解为平行于和垂直于分速度，其大小分别为1D v 和 2D v ，同样，B 的速度也类似地分解为平行和垂直于 两个分速度，其大小设为1B v 和2B v ，如图1(1)所示。
根据对称性，必有1B v =1D v （1） 2B v = 2D v （2）由于绳子不可伸长，A 沿DA 的分速度和D 沿DA 的分速度一定相等，C 沿CD 的分速度和D 沿CD 的分速度也相等，即：（3）（4）另一方面，设绳子AD 给质点D 的冲量的大小为，绳子DC 给质点C 的冲量的大小为。
注意到绳子DC 给质点D 的冲量的大小同样也为（各冲量的方向均沿绳子的方向）。
由对称性还可以判定，绳子AB 给质点B 的冲量的大小也是，绳子BC 给质点B 和C 的冲量的大小都是。
根据动量定理，可分别列出关于质点D 平行和垂直于方向以及质点C平行于 方向的关系式如下：（5）（6）（7）由（3）—（7）五式可解出所需的和：（8）（9）（10）由此结果与（1），（2）两式，得此系统的总动量为，方向沿CA 。
此系统的总动能为题2：有一块透明光学材料，由折射率略有不同的许多相互平行的，厚度d=0.1mm 的薄层紧密连接构成，图2表示各薄层互相垂直的一个截面，若最下面一层的折射率为n 0，从它往上数第K 层的折射率为n K =n 0-K v ，其中n 0=1.4,v=0.025，今有一光线以入射角i=60°射向O 点，求此光线在这块材料内能达到的最大深度？分析与解答： 设光线进入材料后的折射角为r ，则根据折射定律有，此光线从最下面一层进入向上数第一层时，入射角为，折射角为，同样根据折射定律有，也即光线从第一层进入第二层时，同样可得综合以上分析可得：因为 ，所以 随着K 的增大而增大，则随着K 的增大而减小，即光线在顺序变化的介质中传播时将偏向折射率变大的方向。
化工原理下册模拟试题试题(5-8)及答案
化工原理下册试题五1．多项选择题：（1）X06b05088选择题（在正确答案下方划一横道）低浓度的气膜控制系统，在逆流吸收操作中，若其它操作条件不变，而入口液体组成Xa 增高时，则气相总传质单元数OG N 将（A 增加、B 减少、C 不变、D 不定） 气相总传质单元高度OG H 将（A 增加、B 减少、C 不变、D 不定） 气相出口组成a y 将（A 增加、B 减少、C 不变、D 不定） 液相出口组成b x 将（A 增加、B 减少、C 不变、D 不定） （2）X07a05062请将你认为最恰切答案填在（ ）内。
（1）某真空操作精馏塔，因故真空度减小，而F ，D ，f x，q ，加料位置，回流比R 都不变。
则塔底残液w x 变化为：（ ） （A ）变小 (B)变大 (C)不变 (D)不确定(2)精馏操作时，若F ，D ，f x，q ，加料板位置，R 都不变，而将塔顶泡点回流改为冷回流，则塔顶产品组成D x 变化为：（ ） （A ）变小 (B)变大 (C)不变 (D)不确定（3）X08b05027判断下列命题是否正确：A)上升气速过大会引起漏夜 B)上升气速过大会引起液泛C)上升气速过大会造成过量的液沫夹 D)上升气速过大会造成过量的气泡夹带E)上升气速过大会使板效率下降 （4）X09a05057①已知湿空气的下列哪两个参数，利用H-I 图可以查得其它未知参数（ ）。
(A)(w t ，t)； (B)(d t ，H)； (C)(p ，H)； (D)(I ，w t )。
②干燥器进口的温度计最小分度是0.1℃，下面是同一温度时的几种记录，哪一种是正确的（ ）。
(A). 75℃；(B). 75.0℃；(C). 75.014℃；(D). 74.98℃③已知物料的临界含水量为0.2㎏水/㎏绝干料，空气的干球温度为t ，湿球温度为w t ，露点为d t ，现将该物料自初始含水量1X =0.45㎏水/㎏绝干料干燥至2X =0.1㎏水/㎏绝干料，则在干燥末了时物料表面温度m t ：（ ）。
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《管理学基础》模拟题五
一、判断题（每小题分，共20分）
1．（）领导只要有权，下属自然会跟从。
2．（）分权越彻底，管理越有效。
3．（）根据双因素理论，奖金属于保健因素。
4．（）下级参与决策的程度越深，决策的质量就越高。
5．（）传统的工作设计都采用专业分工的方法，由于其存在很多缺点和不足，现在的工作设计只采用工作内容丰富化的方法。
6．（）直线职能结构的组织的优点是，即可以发挥职能部门专业技能的优势，又有较好的适应环境的能力。
7．（）从实际运作的角度看，经营决策最终选择的一般只是满意方案而不是最优方案。
8．（）在市场经济条件下，企业经营的唯一目的就是追求经济效益，别无他求。
二、选择题（每小题分，共25分）
1．以下哪种现象不能在需要层次理论中得到合理的解释：（）
A．一个饥饿的人会冒着生命危险去寻找食物。
B．穷人很少参加排场讲究的社交活动。
C．在陋室中苦攻“歌德巴赫猜想”的陈景润。
D．一个安全需要占主导地位的人可能因为担心失败而拒绝接受富有挑战性的工作。
2．以下何种组织形式最直接体现了管理专业化分工的思想：（）
A．直线制
B．直线职能制
C．事业部制
D．矩阵制
3．下列几项活动中，哪一项不属于管理活动（）
A．部队中的班长与战士谈心。
B．企业的主审计师对财务部门进行检查。
C．钢琴家制定自己的练习计划。
D．医院的外科主任主持会诊。
4．“运筹帷幄之中，决胜千里之外”，这里的“运筹帷幄”反映了管理的哪一个职能（）A．计划职能
B．组织职能
C．领导职能
D．控制职能
5．某企业在推行目标管理中，提出了如下目标：“质量上台阶，管理上水平，效益创一流，人人争上游”。
该企业所设定的目标存在着哪方面的欠缺（）
A．目标缺乏鼓动性
B．目标表述不够清楚
C．目标无法考核
D．目标设定得太高
6．处长大李任现职已有五年，其业绩在局里颇有口碑。
大李为局长老王一手提拔，两人一
向关系密切，但最近却出现了一些不和谐的征兆。
大李私下抱怨老王不给自己留面子，在下级面前对自己呼三喊四，对自己的工作也干预太多；老王则觉得大李翅膀硬了，不象过去那样听话了。
根据领导生命周期理论，你认为老王应当采取下列哪种领导方式较为合适（）A．高工作、高关系
B．高工作、低关系
C．低工作、高关系
D．低工作、低关系
7．以下哪种因素不属于赫兹伯格所认为的保健因素（）
A．富有挑战性的工作
B．良好的人际关系
C．较高的工资水平
D．完备的管理制度
8．领导常用“不想当元帅的士兵不是好士兵”这句话去激励下属，这是一种：（）
A．关怀激励
B．兴趣激励
C．危机激励
D．目标激励
9．“士为知己者死”这一句话反映了有效的领导始于：（）
A．上下级之间的友情
B．为下属设定崇高的目标
C．为了下属的利益不惜牺牲自己
D．了解下属的欲望和需要
10．一个尊重需要占主导地位的人，下列哪种激励措施最能产生效果：（）
A．提薪
B．升职
C．解聘威胁
D．工作扩大化
三、简答题（每小题6分，共30分）
1．组织环境主要包括哪些因素
2．权变理论的基本思想是什么
3．简述公平理论的主要观点。
4．有效控制应该遵循什么原则
5．建立组织结构的步骤主要有哪些
四、案例分析（共25分）
我们愿意加班
卢小姐在荷兰银行单证部工作，这是银行最繁忙的一个部门，主要从事信用证通知、议付、审单、结汇、开证等烦琐而又单一的工作。
虽然分工很细，但业务量很大，每月1500万美圆的交易额却只有7个人（包括卢小姐）在做，每天案头总是堆满了文件，而做不完的往往得加班1-2小时，因此到了星期五，没有人再愿意加班，而是想尽早回家过周末，虽然加班费是平时的两倍。
但星期五恰是银行最忙碌的一天，有些事如不在星期五做完，就必须过两个休息日，这样在时间上就耽误了，也影响了银行的声誉。
因此，副行长邓先生自然希望员工能自愿留下来加班，把事情做完。
有一次周五，需要结汇的单子并不多，所以员工们想下班后留下来干完，免得星期一案头又堆起一坐小山，邓先生看见了，马上盛情邀请加班的员
工在附近一家饭店共进晚餐。
在席上，他先是对员工的加班行为进行表扬，同时希望员工们能继续下去，当然员工们都欣然同意。
在以后的几个星期内，员工们在星期五都自愿留下来加班，而邓先生也每两星期请员工们吃饭，这样过了一个月，员工们对此开始厌倦，并戏称邓先生的请客吃饭是“鸿门宴”。
邓及时得到了这一反馈，并签发了一项新规定，凡星期五加班的，加班费按正常时间的四倍计，累计加班时间满20小时的可休假一天，事实证明该规定非常有效。
现在，员工们都愿意在星期五加班了。
问题
1．试用你学过的激励理论分析，员工为什么对周五加班从愿意到厌倦、又到愿意
2．如果采用惩罚策略，是否也能起作用为什么
一、判断题（每小题分，共20分）
1.错
2.错
3.错
4.错
5.错
6.错
7.对
8.错
二、选择题（每小题分，共25分）
三、简答题（每小题6分，共30分）
1.答：（1）外部环境一般环境：（直接）政治、经济、社会文化、技术等。
任务环境：（间接）资源供应、服务对象、竞争对手、政府主管部门等。
（2）内部环境组织文化（长期发展中生成和发展起来的日趋稳定的独特的价值观、以及以此为核心的行为规范、道德准则、群体意识、风俗习惯等）经营条件：人员素质、资金实力、科研力量等。
2.答：组织和组织成员的行为是复杂的，不断变化的，这是一种固有的性质。
而环境的复杂性又给有效的管理带来困难，从而从前各种管理理论所适用的范围就十分有限。
因此，管理方式也应该随着情况的不同而改变。
3.答：人们在工作以后都会对公平作出判断，比较报酬与付出，与过去的情况比较，与周围的人相比较，当感觉满意时，就产生公平的感觉，有很强的主观色彩。
4.答：控制的目的性；控制的及时性；控制的经济性。
5.答：（1）确定组织目标（2）对目标进行分解（3）明确为实现各项目标所需的各项业务工作（职务设计、工作设计）（4）建立部门（5）建立层次结构（6）分配责权（7）协调和综合。
四、案例分析（共25分）
要点分析：
1.答：进一步了解员工的主导需求；精神激励与物质激励相结合；已经满足的需求不再激励作用。
2.答：由于员工所做的加班工作是额外的工作，应该奖励而不是惩罚。