2009年春浙江省高等学校单片机三级--参考答案

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2009年春、秋浙江省高校计算机三级(网络技术)真题+答案

2009年春浙江省高等学校计算机等级考试试卷（三级网络技术及应用）说明：（1）请将所有试题的答案填写在答卷上，否则作无效处理；（2）试题1为判断题，请在答卷上用√和×表示对和错；（3）试题2为选择题，请在答卷上的各小题选项的对应位置上填“√”（4）请在答卷上填写学校名称、准考证号和姓名，并将你的准考证号的后五位填写在答卷右下角的指定位置内；（5）考试时间为120分钟。

试题1判断题用√和×表示对和错（每小题1分，共10分）1．因特网起源于美国的ARPANET。

√（1）2．UNIX操作系统采用星型文件系统，具有良好的安全性、保密性和可维护性。

X（2）3．TCP协议可以提供面向非连接的数据流传输服务。

X（3）4．VLAN中如果同一逻辑工作组的成员间进行通信，它们可处于不同的物理网段。

√（4）5．网桥用于两个不兼容的局域网之间的连接。

X（5）6．并行传输时将组成字符的各个位同时传输，每一个数据位都有独立的数据传输线，传输速度非常快。

√（6）7．防火墙中显示内部IP地址及网络机构的细节。

X（7）8．远程桌面是指通过网络使本地电脑能够控制远程电脑的技术。

√（8）9．IEEE802．11标准定义了无线局域网技术规范。

√（9）10．信息高速公路是指告诉公路的信息化建设。

X（10）试题2选择题（分为三个部分，共50题，每小题1.5分，共75分）（第一部分，网络基础知识，1-30）1、地理位置上分散布置的多台独立计算机通过通信线路互联构成系统称为（1），它使多用户能够共享软、硬件资源，提高系统能力。

A．分散系统Ｂ．电话网Ｃ．计算机网络Ｄ．智能计算机Ｂ．内存容量大C．运算速度快Ｄ．计算精度高A．双绞线Ｂ．同轴电缆Ｄ．无线介质４、教学机房内局域网的布线最常用的传输介质是（４）。

Ａ．双绞线Ｂ．同轴电缆Ｃ．光缆Ｄ．无线介质５、下列哪个范围内的计算机网络可称之为局域网（５）。

Ａ．一个楼宇内Ｂ．一个城市里Ｃ．一个国家Ｄ．全世界范围内６、设线路传输速率为12800b/s，为5个用户共用，在异步时分复用（A TDM）下，每个用户的最高速率为（6）。

2009年9月计算机等考三级数据库试题及参考答案

11、在建立表结构时定义关系完整性规则( )A.使DBS能够自动维护数据完整性约束条件B.还需要编程实现数据完整性约束条件C.没有必要定义D.将使系统操作复杂【参考答案】A12、段页式存储管理汲取了页式管理和段式管理的长处，其实现原理结合了页式和段式管理的基本思想，即( )A.用分段方法来分配和管理存储空间，用分页方法来管理地址空间B.用分段方法来分配和管理地址空间，用分页方法来管理存储空间C.用分段方法来分配和管理主存空间，用分页方法来管理辅存空间D.用分段方法来分配和管理辅存空间，用分页方法来管理主存空间【参考答案】B13、ODBC是( )A.客户机与服务器之间的接口标准B.数据库查询语言标准C.数据库应用开发工具标准D.数据安全性标准【参考答案】A14、概念模型( )A.依赖于DBMS和硬件B.独立于DBMS和硬件C.依赖于DBMSD.独立于DBMS【参考答案】B15、概念结构设计的目标是产生数据库概念结构(即概念模式)，这结构主要反映( )A.DBA 的管理信息需求B.应用程序员的编程需求C.企业组织的信息需求D.数据库的维护需求【参考答案】A16、在概念设计和逻辑设计之间起桥梁作用的是( )A.DFDB.E-R 图C.数据结构图D.功能模块图【参考答案】B17、有两个实体集，并且它们之间存在着一个M∶N联系，根据概念E模型转换成关系数据库的规则，这个E结构转换成表的个数为( )A.1B.2C.3D.418、在数据库设计中，用E-R图来描述信息结构但不涉及信息在计算机中的表示，它是数据库设计的( )阶段。

A.概念模型B.逻辑模型C.结构模型D.物理模型19、E-R图是数据库设计的工具之一，它适用于建立数据的( )A.中继器B.桥接器C.路由器D.网关20、在关系数据库设计中，设计关系模式是( )的任务。

A.需求分析阶段B.概念设计阶段C.逻辑设计阶段D.物理设计阶段When you are old and grey and full of sleep,And nodding by the fire, take down this book,And slowly read, and dream of the soft lookYour eyes had once, and of their shadows deep;How many loved your moments of glad grace,And loved your beauty with love false or true,But one man loved the pilgrim soul in you,And loved the sorrows of your changing face;And bending down beside the glowing bars,Murmur, a little sadly, how love fledAnd paced upon the mountains overheadAnd hid his face amid a crowd of stars.The furthest distance in the worldIs not between life and deathBut when I stand in front of youYet you don't know thatI love you.The furthest distance in the worldIs not when I stand in front of youYet you can't see my loveBut when undoubtedly knowing the love from both Yet cannot be together.The furthest distance in the worldIs not being apart while being in loveBut when I plainly cannot resist the yearningYet pretending you have never been in my heart. The furthest distance in the worldIs not struggling against the tidesBut using one's indifferent heartTo dig an uncrossable riverFor the one who loves you.倚窗远眺，目光目光尽处必有一座山，那影影绰绰的黛绿色的影，是春天的颜色。

浙江省计算机三级网络技术历年真题完整版含答案到

2005年秋浙江省高等学校计算机等级考试试卷（三级，网络技术）一、计算机网络基础（本题21分）1、调制解调技术主要用于下列（1）种通信方式中。

（1）A．模拟信号传输数字数据 B．模拟信号传输模拟数据C．数字信号传输数字数据 D．数字信号传输模拟数据2、在下列多路复用技术中，（2）具有动态分配时隙的功能。

（2）A．同步时分多路复用 B．统计时分多路复用C．频分多路复用D．波分多路复用3、下面属于数据通信中差错控制技术的是（3）。

（3）A．分组技术B．曼彻斯特码C．异步传输D．海明码4、按覆盖的地理范围进行分类，计算机网络可以分为3类，即（4）。

（4）A．局域网、广域网与X.25网B．局域网、广域网与宽带网C．局域网、广域网与ATM网D．局域网、广域网与城域网5、下列有关网络拓扑结构的叙述中，正确的是（5）。

（5）A．星形结构的缺点是，当需要增加新的结点时成本比较高B．树型结构的线路复杂，网络管理也较困难C．网络的拓扑结构是指网络中结点的物理分布方式D．网络的拓扑结构是指网络结点间的布线方式6、Internet网是目前世界上第一大互联网，它起源于美国，其雏形是（6）。

（6）A．ARPANET网B．NCFC网C．GBNET网D．CERNET网7、对于数据通信方式，下列说法正确的是（7）。

（7）A．通信方式可以分为单工通信、双工通信、半单工通信、半双工通信B．单工通信是指通信线路上的数据有时可以按单一方向传送C．半双工通信是指一个通信线路上允许数据双向通信，但不允许同时双向传送D．以上说法均不正确8、在常用的传输介质中，带宽最宽、信号传输衰减最小、抗干扰能力最强的一类传输介质是（8）。

（8）A．双绞线B．无线信道C．光纤D．同轴电缆9、通信子网为网络源结点与目的结点之间提供了多条传输路径的可能性，路由选择是（9）。

（9）A．建立并选择一条物理链路B．建立并选择一条逻辑链路C．网络结点收到一个分组后，确定转发分组的路径D．选择通信媒体10、若要对数据进行字符转换和数字转换，以及数据压缩，应在OSI（10）层上实现。

浙江省高等院校计算机品级考试三级数据库真题及参考答案

C．p=p->next
D．p->next->next=p->next
（14）在带有头结点的双链表 l 中，指针 p 所指结点是第一个结点的条件是（）。
A．p=l->next B．p->next=l C．l->next=p->next D．p->next=l->next
（15）编号为 1、2、3、4、5、6 的六节车厢依次通过一段栈形轨道，可以排出（）。
的编号为 1，那么编号为 49 的结点的右孩子的编号是（）。
A．50
B．98
C．99
D．无右孩子
（19）设有关键码序列（16，9，4，25，15，2，11，18，14，5，8，20），按关键码值递增的次序
排列，采用直接选择排序法，下面（）序列是第二趟扫描后的结果。
A．2，9，4，25，15，16，11，18，14，5，8，20
2
9
4
4
9
25
15
2
11
11
15
16
18
18
25
C．
2
D．
9
4
2
9
16
18
15
16
11
18
15
4
11
25
25
答案：C；D；A；A；B；B；B；C；B；C。
（21）存储在计算机外部存储介质上的结构化的数据的集合，其英文名称是（）。
A．Data Dictionary（简称 DD）
B．DataBase（简称 DB）
A．4、6、3、2、5、1 B．3、5、4、6、2、1
C．1、5、4、6、2、3 D．5、3、4、6、2、1

2009年6月浙江省大学英语三级考试试卷答案

2009年6月浙江省大学英语三级考试试卷答案/resources/band3-0906.aspSection A1.A、She will save stamps for the man’s sister.B、She can’t give stamps to the man’s sister.C、She will no longer get letters from Canada.D、She has given the stamps to the man’s roommate.2.A、A math teacher and his colleague.B、A teacher and his student.C、A student and his classmate.D、A librarian and a student.3.A、In January.B、In March.C、In June.D、In July.4.A、He must attend a class.B、He must meet his teacher.C、He must finish his homework.D、He must go out with his girlfriend.5.A、She took somebody to the hospital.B、Something went wrong with the bus.C、She came on foot instead of taking a bus.D、Something prevented her from catching the bus.6.A、He doesn’t want to help.B、He isn’t able to work.C、He’ll help the woman later.D、He’d like to work here.7.A、In a bar.B、At home.C、At a lecture.D、In a cinema.8.A、Maria doesn’t have any friends.B、Maria has many hobbies and interests.C、Maria’s friends don’t call her very often.D、Maria likes to talk on the phone with her friends.9.A、It looks quite new.B、It needs to be painted.C、It looks better than it runs.D、It needs to be repaired.10.A、The trip might be extremely tiring.B、They would like to take more trips.C、They’ve talked too much about the trip.D、The trip will probably be too expensive.Section BPassage OneQuestions 11 to 13 are based on the passage you have just heard.11. A、They invited him to a party.B、They asked him to make a speechC、They gave a special dinner for him.D、They invited his wife to attend the12. A、He was very embarrassed.B、He felt greatly encouraged.C、He felt very sad.D、He was deeply touched.13. A、Sam did not like the gold watch.B、The company had some financial problems.C、Sam’s wife was satisfied with the gold watch.D、Sam’s wife did not think Sam was fairly treated.Passage TwoQuestions 14 to 16 are based on the passage you have just heard.14. A、850,000.B、More than 1,000,000.C、25,000,000.D、More than 2,000,000.15. A、The environment of the local schools.B、The quality of instruction at the local schools.C、Too much religious instruction at the local schools.D、Lack of advanced math classes at the local schools.16. A、It does not provide advanced courses.B、It requires too much parent preparation.C、It does not provide enough religious instruction.D、It cannot help children learn enough social skills.Passage ThreeQuestions 17 to 20 are based on the passage you have just heard.17. A、Boys tend to speak more than girls.B、Girls are more expressive than boys.C、Girls care more about their listeners.D、Boys show more certainty about things than girls.18. A、Women value privacy more than men.B、Men try to establish intimacy through conversations.C、Men talk more than women in public conversations.D、Women talk more than men in private conversations.19. A、Men are stronger than women.B、Men are more talkative than women.C、Men use language more than women.D、Men have greater power than women.20. A、Women are more helpful by nature.B、Women have a higher sense of achievement.C、The conversational style of men and women is different.D、Women’s conversational styles change more as they mature.Part II Vocabulary21.The general manager is always busy. You should phone his secretary to make an _____ if you want to see him.B、offerC、interviewD、opportunity22.My suitcase was so full that it didn’t have _____ for anything else.A、spotB、roomC、placeD、area23.You are a little overweight. I suggest you _____ Rosie’s example and start doing regular exercise.A、setB、copyC、followD、give24.In 1969 two American astronauts _____ on the moon and walked on its rocky, dusty surface.A、concentrateB、basedC、landedD、focused25.– Do you let your kids go out alone at night? – _____ not!A、AbsolutelyB、ExtremelyC、ActuallyD、Eventually26.It had never _____ to him that he might be falling in love with her.A、happenedB、referredC、occurredD、came27.Due to circumstances _____ our control the performance had to be cancelled.A、beyondB、aboveC、overD、under28.If you’re looking for a job you need to be _____ about where you’re prepared to work.A、changeableB、availableC、flexibleD、mobile29.The woman’s illness _____ the doctors; they couldn’t find the cause.A、attractedB、excitedC、puzzledD、interrupted30.You’d better have the pipe checked today. It has kept _____ for three days.A、pouringB、leakingC、spitting31.This house has many interesting _____. The one I like most is a large Victorian fireplace.A、appearancesB、featuresC、mysteriesD、aspects32.Students from poor families can apply for _____ aid from the government to support their education.A、legalB、firstC、financialD、economic33.I didn’t expect the restaurant would _____ us ￡50 for the wine.A、spendB、chargeC、costD、take34.Sorry I never drink milk; it doesn’t _____ me.A、agree toB、agree onC、agree withD、agree about35.This nurse was _____ when you were sent to the hospital.A、in turnB、in practiceC、on dutyD、on business36.Getting young people together will help to _____ the barriers between them.A、break offB、break downC、break upD、break out37.You can go out, _____ you promise to come back before 11 o’clock.A、as far asB、as soon asC、so far asD、so long as38.Caroline doesn’t have a natural gift for music but she ______ it with hard work.A、makes forB、makes intoC、makes up forD、makes use of39.It is quite clear that his only reason for investing in the company is to _____.A、take it overB、take it downC、take it inD、take it off40.Excuse me, you can complain to me; I’m the person _____.A、in caseC、in effectD、in forcePart III Structure41. The doctor promised to keep all the family members _____ of how the operation was going on.A、informingB、to be informedC、informedD、to inform42. Mr. Smith stayed up late on Friday, _____ a long speech for the president.A、preparedB、to prepareC、preparingD、prepare43. The angry demonstrators demanded that the military government _____ all political prisoners.A、freeB、must freeC、freedD、would44. You will get your camera next Monday. We regret any inconvenience _____ to you.A、having causedB、causingC、to be causedD、caused45. Now everything is clear and there is no point _____ the truth.A、in denyingB、to denyC、by denyingD、deny46. _____ is known to all, Lu Xun is one of the greatest writers in China.A、ItB、ThatC、AsD、Which47. Medical treatment varies greatly from state to state in this country, _____ is really confusing to meA、thisB、itC、thatD、which48. Brown’s father told him he could have _____ he wanted for birthday.A、whereverB、whateverC、wheneverD、whichever49. The day will come sooner or later _____ I buy a boat and sail a round the world.B、asC、untilD、when50. At the end of last month, they _____ thirty percent of the production plan.A、will finishB、have finishedC、had finishedD、finished51. If I _____ younger and in better condition, I would have run after the thief with others.A、wereB、wasC、had beenD、would be52. _____ the telephone was invented in the nineteenth century _____ speech sounds overa longA、Not until…could people sendB、Not until…people could sendC、Until…could people not sendD、Until…people could send53. Though dress may be, _____ some extent, helpful in judging a person, that alone will not be sufficient.A、forB、toC、inD、by54. Tom didn’t believe a word she said and _____.A、neither did the policeB、neither the police didC、the police didn’t neitherD、the police did neithe55. The _____ they arrived at the hotel, couples were presented with a bunch o f roses.A、momentB、timeC、occasionD、chance56. I talked with Julia in the classroom just a minute ago. She _____ to the cinema.A、hadn’t goneB、shouldn’t have goneC、can’t have goneD、wouldn’t have gone57. A survey was carried out on children’s attitudes to violence on television, _____ was surprising.A、the resultB、its resultC、which resultsD、the result of which58. Scientists have found that there are four levels of sleep, each _____ a little deeper than the one before.B、wasC、beingD、to be59. We lost our way in the desert, and _____ made matters worse was that we ran out of water.A、itB、thatC、whichD、what60. In the Middle Ages people believed it was the earth, not the sun, _____ the center of our planetary system.A、was thatB、that wasC、wasD、thatPart IV Reading ComprehensionPassage OneQuestions 61 to 65 are based on the following passage:Parents have to do much less for children today than they used to, and home has become much less of a workshop. Clothes can be bought ready made, washing can go to the laundry, food can be bought cooked, canned or preserved, bread is baked and delivered by the baker, milk arrives on the doorstep, meals can be had at the restaurant, the work’s canteen(自助食堂), and the school dining-room.It is unusual now for father to pursue his trade or other employment at home, and his children rarely, if ever, see him at his place of work.. Boys are therefore seldom trained to follow their father’s profession, and in many towns they have a fairly wide choice of employment and so do girls. The young wage-earner often earns good money, and soon acquires a feeling of economic independence. In textile(纺织) areas it has long been a rule for mothers go out to work, and this practice has become so widespread that the working mother is now a not unusual factor in a child’s home life, and the number of married women in employment has more than doubled in the last twenty-five years. With mother earning and his older children drawing decent(相当好的) wages, father is seldom the dominant figure that he still was at the beginning of the century. When mother works, economic advantages increase, but children lose something of great value if mother’s employment prevents her from being home to greet them when they return from school .61. What does the first paragraph tell us about policemen?A、They often watch TV.B、They like watching TV.C、They are too busy to watch TV.D、They hate seeing themselves on TV.62. Why does the writer mention a lawyer in the second paragraph?A、To show that a lawyer’s job is more comfortable.B、To emphasize that policemen are physically strong.C、To compare a lawyer’s with policemen’s.D、To indicate that a lawyer’s job is less important than a policeman’s.63. What do real policemen do at work?A、They often deal with robbers and thieves.B、They talk with a lot of victims and visitors.C、They don’t deal with serious crimes very often.D、The usually stay in their office studying cases.64. What does the passage say about a detective?A、His job is to make arrests.B、He is good at finding criminals.C、He has to prove his case in court.D、He visits and helps his witnesses.65. What is the main idea of the passage?A、It is hard for policemen to do their job well.B、Policemen keep in touch with a lot of people.C、Policemen are people that we admire and respect.D、Real policemen’s life is different from what is shown on TV.Passage TwoQuestions 66 to 70 are based on the following passage:If an agreement signed in Germany works out, travelers of this Asian city may one day be able to move from the downtown area to its new airport on a train riding a stream of magnetic energy at speeds up to 500 kilometers per hour.The 40-kilometer trip----now sometimes a long hour journey when the traffic isheavy----could be cut to less than 10 minutes.Such are the goals of a costly project designed to help to ―shorten‖ the distance between the city center and the suburban busy airport by making it easier and faster to carry travelers to and back from the airport.The mayor of the city and Germany’s Thyssen Krupp AG worked out an agreement in Berlin only several days ago that lays the groundwork for the magnetic levitation(悬浮) train line. They signed an agreement to carry out an initial study on the project and outlined the city’s intention to import German technology. The project, once completed and acceptable to the two business parties, will be a double-win: the German company can benefit from exporting its technology and the city receiving German technology can improve its traffic and further strengthen its position as an international city.Called Maglev for short, the system under discussion makes use of a high-speed train levitated above a guideway(高速车辆的导路) and driven by magnetic fields. The project has been in the talking stage for several months.Hans Ueberschaer, the German government official, visited the city together with Harmut Heine, representative of Thyssem Krupp. They had an initial discussion with the mayor three about the project. The talks were believed to be constructive and paved the way for the future talks in Berlin, where an agreement was reached.66. Which of the following is NOT true of fingerprints?A、They vary from person to person.B、They are easily hidden and removed.C、Their uniqueness is beyond explanation.D、They remain unchanged throughout one’s life.67. What does ―superficial injuries‖ in the second paragraph mean?A、―injuries caused by accident‖B、―injuries in inner skin‖C、―severe injuries in the skin‖D、―injuries on the surface of the skin‖68. Why do policemen often use fingerprints in their investigation?A、Because it is the only way to identity the suspect.B、Because it is the easiest way to solve a criminal case.C、Because they can be easily recorded with printer’s ink.D、Because they can help policemen to identify their owners.69. What is the main idea of the last paragraph?A、It is difficult to see fingerprints with human eyes.B、There are special ways to recover a suspect’s fingerprints.C、Even a small part of a fingerprint is useful for identificationD、Suspects usually try to avoid leaving their fingerprints at the scene.70. Which of the following is the best title of the passage?A、Fingerprints and Their UseB、Policemen and FingerprintsC、Fingerprints Are Useful EvidenceD、Fingerprints Identify Criminals without MistakePassage ThreeQuestions 71 to 75 are based on the following passage:In some countries there is a fixed charge for personal services. A certain percentage may be added to the bill at a hotel or restaurant ―for the service‖. In other places the customer may be expected to give a tip, or a small amount of money, as a sign of appreciation whenever services are performed. In the United States there is no standar d practice in regard to tipping. The custom is more common in a large city than in a small town. A native American may often be in doubt about when and how much to tip when he is in a city that is strange to him. In general, however, a tip is expected by the porter who carries your baggage, by taxi drivers( except, perhaps, in a small town), and by those who serve you in hotel and restaurants..When you pick up your incoming baggage at an airport, you may tip the man who takes it to the taxi or airport bus. He usually expects one dollar a bag for his service. In some cities the taxi that takes you to your hotel may have one meter (计价器) that shows the cost of the trip and another that shows a fixed charge, usually about 50 cents, for ―extra‖. In some cities the taxi driver may expect a tip in addition to the ―extra‖, especially if he carries your suitcase. If no ―extra‖ is charged, a tip is usually given. Hotels generally do not make a service charge, though there are places where one is added. It is customary (惯常的), however, to give something to the porter who carries you suitcases and shows you to your room. In case of doubt, one dollar for each bag he carries is satisfactory. In a restaurant you generally leave about 15 percent of the bill in small change on that table as a tip for the person who has served you. A service charge is generally not included inthe bill except in some of the larger, more expensive places. If the order is small----a cup of coffee at a lunch counter, or something of the sort----a tip is not usually expected.71. What will the world be like in the future according to Paragraph One?A、It will be a world of male superiority.B、It will be a world of equality between the sexes.C、It will be a world with battles between the sexes.D、It will be a world where men and women play different roles.72. What happens in some American families according to Paragraph Two?A、The mother plays a more important role than the father.B、The father plays a more important role than the mother.C、Children play a more important role than their parents.D、Parents play a more important role than their children.73. What is the writer’s opinion on children’s upbringing?A、It is the father’s responsibility.B、It is the mother’s responsibility.C、It is the responsibility of both parents.D、Children should take care of themselves.74. What is the opinion of specialists on the family?A、A woman’s place is in the home.B、Men’s place in the home should be emphasized.C、Men should be praised for their part in the family.D、Women should be blamed for their role in the family75. What is the main idea of the passage?A、Sound development of children.B、Equality between men and women.C、Co-operation between husband and wife.D、Husband and wife share in tasks and in decision-making.Part V Translation from English into ChineseDirections: In this part there is a passage with 5 underlined sections, numbered 76 to 80. After reading the passage carefully, translate the underlined sections into Chinese. Remember to write your translation on the Translation Sheet.People have traded and bartered 物物交换) for centuries. Whatever else the flea (跳蚤) market may appear to be, its purpose is the sale and exchange of goods. Whether they are knowledgeable collectors or just plain bargain hunters, people are drawn to the flea market by the enormous amount and variety of goods offered.(76) The possibility of finding something truly valuable before anybody else does make shopping at a flea market a treasure hunt.For many buyers, the process of bargaining at a flea market is as much fun as the bargain itself. (77) It’s not just the money they save that gives them a sense of accomplishment; it’s the satisfaction of playing an ancient game.Satisfaction also comes from the immediacy of a flea market exchange. After you negotiate your price, it is ―cash and carry‖: the dealer pocket your money, you go home with your purchase, and that’s that. You got what you wanted, and the dealer got what he or she wanted.(78) In today’s world of credit cards, the flea market takes you back to a time whenlife was simpler and money had more meaning.What do the ―fleas‖ have in common here?(79) Perhaps it is a belief in becoming economically self-sufficient, and in taking control of their own lives. Vendors(摊贩) willingly give up the security of a nine-to-five job in exchange for freedom: freedom from fixed working hours; freedom from the world of inflation; freedom to choose when, where, and what they will sell; freedom to be what they want to be.Yet the flea market is much more than an odd mixture of people selling a variety of products. ―This is a serious enterprise,‖ says a vendor. ―The amount of a labor and organization that goes into an operation like this is impressive.‖(80) Perhaps most important to the flea market’s success is the spirit of cooperation among vendors. ―At the flea market, everyone is encouraged to be an individual, but, at the same time, to help each other out,‖ says another vendor. ― It’s a shame cities aren’t run like this.‖76.77.78.79.80.Part VI Translation from Chinese into English81. 和其它品牌相比，我们的电脑质量上乘，价格富有竞争力。

2009年(春)三级偏软笔试试卷参考答案及解析

2009年（春）笔试试卷参考答案及解析一、选择题I．计算机基础知识（1）B）【解析】PCI为串行总线，只有选项B）是符合串行传输的要求的。

（2）D）【解析】SATA的全称是Serial Advanced Technology Attachment（串行高级技术附件，一种基于行业标准的串行硬件驱动器接口），是由Intel、IBM、Dell、APT、Maxtor和Seagate公司共同提出的硬盘接口规范。

故选项D）正确。

（3）D）【解析】（28）BCD=00101000，（39）BCD=00111001，由于CPU内部不识别BCD码，以二进制相加，故结果为01100001，转换为十六进制61H，所以选项D）正确。

（4）B）【解析】FCH转换为二进制为11111100，由于其最高位为1故可知是负数，遵循减一取反可得-00000100转换为十进制-4，故选项B）正确。

（5）A）【解析】阶码用补码表示，尾数用原码表示，阶码最大为2，尾数最大为1-27 -（4-1），故为1-2-3，绝对值最小的数为2-8 *2-3=2-11，故选项A）正确。

（6）A）【解析】ASCII表中30H～39H为0到9十个阿拉伯数字；41H～5AH为26个大写英文字母，61H～7AH为26个小写英文字母，故选项A）中全为小写字母。

（7）D）【解析】按位与或运算得11001010，转换为十六进制为CAH，故选项D）正确。

（8）B）【解析】内存可直接与CPU交换信息，故选项B）不正确。

（9）C）【解析】按下电源开关时，电源就开始向主板和其它设备供电，CPU 马上就从地址FFFF0H处开始执行指令，进入BIOS，故选项C）正确。

（10）C）【解析】软件包括程序与文档，故软件文档也属于软件；计算机病毒本质上讲也是软件程序，只有总线驱动不是，故选项C）不属于软件。

（11）D）【解析】联网的计算机必须装有可以互联的协议，而不需要指定操作系统。

浙江2009年10月高等教育自学考试单片机原理及应用试题

浙江2009年10月高等教育自学考试单片机原理及应用试题课程代码：02358一、单项选择题(本大题共5小题，每小题2分，共10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.单片机中用于存放程序状态信息的寄存器是( )A.ACCB.PSWC.PCD.DPTR2.MCS-51外扩存储器时，系统的高8位地址总线是由_________口构成。

( )A.P0B.P1C.P2D.P33.MCS-51单片机8位重装载方式定时器工作在( )A.方式0B.方式1C.方式2D.方式34.在MSC-51单片机程序中用伪指令EQU定义的数据( )A.在片内RAMB.在外部ROMC.在外部RAMD.无相关存储空间5.RS-232C总线标准中规定逻辑1的电压为( )A.-3.6V～-25VB.3.6V～25VC.3.6V～5VD.-3.6V～-5V二、填空题(本大题共8小题，每空1分，共10分)请在每小题的空格中填上正确答案。

错填、不填均无分。

6.堆栈指示寄存器的符号是______________，复位后它的内容是______________。

7.MCS-51系统中，当PSEN引脚为低电平时，表示CPU要从________________读取信息。

8.当（RS1，RS0）=（1，1）时，工作寄存器R7对应内部RAM中的________________字节单元。

9.MOV C，15H源操作数的寻址方式为______________寻址。

10.MCS-51单片机在逻辑上有______________个存储空间。

11.MCS-51单片机有______________个中断源。

12.计算机的数据传送主要有两种方式：______________和______________。

13.为使单片机系统能输出一定频率的正弦波电压信号，应增加______________。

三、名词解释(本大题共3小题，每小题3分，共9分)14.变址寻址方式15.中断16.波特率四、简答题(本大题共5小题，每小题5分，共25分)17.简述8051片内RAM的空间分配。

历年浙江省计算机三级单片机

2007年春浙江省高等学校计算机等级考试试卷（三级单片机及嵌入式系统应用）试题1判断题用“和X 表示对和错（每小题1分，共10分）1、 ........................................................................ 满足控制对象的实时性要求是嵌入式操作系统重要的特点 ................................... . （1）2、单片机程序存储器有 OTPROM 、FlashROM 等类型，其中 OTPROM 提供一次性的写入操作，而 FlashROM 可以重复编程写入。

相对来说，在具体应用中，OTPROM比较便宜且可靠，而 Flash ROM 则开发调试方便 ............................. （2） 3、一般来讲CMOS 电路比TTL 电路的功耗要低 ............................. （."） 4、 MCS51单片机采用哈佛结构来构建程序存储空间和数据存储空间，程序在只读空间中运行，可靠性高 ................................................. •… （V ） 5、开漏输出的IO 口作为逻辑输出时必须外接上拉电阻 ........................... （） 6、 MCS51单片机的IO 口的功能需要专门的指令来设定 ....................... （X ） 7、 MCS51单片机的串行口可以与 PC 机的串行接口直接相连进行串行通信 ....... （X ） 8 MCS51单片机的复位信号为持续两个机器周期的低电平信号 (X )9、在应用系统中，引入俗称“看门狗”是为了加密用的（防止程序发生死循环） ........................................ （x ）试题2选择题（每小题2分，共60分）1、程序存储器从3H 号单元开始的一小段连续空间的使用，以下描述比较合适的为AA 、作为中断入口，不能用作其他用途B 、用来存放中断入口地址C 、根据需要可以作为中断入口，也可以作为一般的程序存储单元D 、中断向量表的存放位置2、单片机定时/计数器工作于16位定时器方式，现在要定时10000个机器周期，则计数初值应该设置为 B A 、10000B 、55536C 、55535D 、100*机器周期 /时钟周期3、单片机的工作寄存器可以用寄存器的形式来访问，也可以用 RAM 单元的形式来访问，内部RAM 8H 号字节单元即是指第旦组工作寄存器中的（3）寄存器A 、0 组，R0B 、1 组，R0C 、0 组，R1D 、1 组，R14、若执行一段代码共耗时 1000个机器周期即2毫秒，则该单片机应用系统的振荡脉冲频率为AA 、500HzB 、1MHzC 、12MHzD 、6MHz5、对程序计数器 PC 的操作 —AA 、是自动进行的B 、通过数据传送进行C 、通过加“ 1”指令进行D 、通过减“1”指令进行 .（两个周期的高电平）10、MCS51单片机中断响应的时间是固定的 (x)6、采用扫描法工作的键盘接口电路，需要有CA 、一个输出口C 、一个输入口和一个输出口 7、80C51单片机的扩展地址总线 BA 、由专用的地址引脚来构建C 、由专门的总线控制器来构建 B 、一个输入口D 、两个输入口B 、由P0 口和P2 口共同来构建D 、由10处理器来构建& 80C51单片机的P0 口，以下描述正确的是 AA 、作为总线来使用时，其输出驱动电路为推拉式电路结构，负载能力高B 、作为普通10 口输入时，无须考虑“准”双向口的限制C 、可以拆分成两个 4位10 口并有专门的指令D 、具有外部中断请求信号输入引脚 9、访问外部程序存储器时，不涉及到下列引脚 BA 、PSENB 、WRC 、EA10、中断请求的撤消需要专门的电路来完成的是 B15、编程器在单片机应用系统开发过程中起的作用是（ 15）A 、帮助你编写代码B 、把目标程序写入到程序存储器中C 、可以代你生成初始化代码D 、协助PC 机进行代码编写工作16、单片机响应中断 AA 、最快需要3个机器周期时间B 、不用等待，有请求就响应C 、响应时间肯定不会超过 8个机器周期D 不用等待，除非有高级或者同级中断正在处理 17、扩展8KB 程序存储器，需要 5条P2 口线。

历年浙江省单片机及应用技术三级考试

2007年秋浙江省高等学校计算机等级考试试卷(三级单片机及应用技术)试题l 判断题用√和×表示对和错(每小题1分，共10分)1、哈佛总线结构的数据空间与程序空间完全分开。

传统的MCS-51单片机有独立的数据空间和程序空间，但是总线系统不独立，需要分时复用，这造成了CPU运行的复杂性。

(1)2、子程序调用时将会自动保护断点和现场。

(2)3、SP称之为堆栈指针，堆栈是单片机内部的一个特殊区域，与内部RAM无关。

(3)4、MCS-51单片机片外部数据存储器与扩展I/O口统一编址。

(4)5、指令INC A和ADD A，#01H运行结果完全一样。

(5)6、串行口发送完一帧数据和接受完一帧数据对应同一个中断源，靠标志RI、TI区分。

(6)7、当有一个中断源提出中断请求，则相应的中断服务程序将被立即执行。

(7)8、DPTR为16位寄存器，5l单片机指令系统有专门16位二进制数算术运算指令。

(8)9、I2C总线的外围扩展器件一般为CMOS器件，对于I2C总线来说，总线的电流负载能力是够用的，而更多的需要考虑扩展器件的I2C总线接口的等效电容，该电容的存在会造成总线传输的延迟而导致数据传输出错，故需要限制扩展的节点数和总线长度。

(9) 10、指令长度越长，执行时间越长。

(10) 试题2 选择题(单选题每小题2分，共60分)1、嵌入式计算机系统与通用计算机系统形成了现代计算机的两大分支，两者从技术上比较，嵌入式计算机系统追求的是 (1) B 。

A、海量的存储能力B、较强的控制能力C、高速的运算能力D、丰富的应用软件2、在单片机应用系统开发过程中，当硬件系统测试合格，就可以进入仿真调试了，而要进行仿真调试一般需要以下设备 (2)D 。

A、仿真器B、编程器C、烧录器D、实验箱3、目前单片机应用系统中，外围器件的扩展越来越多采用串行扩展方式。

常用的串行扩展总线不包含以下 (3)B 总线。

A、IICB、PC-104C、1-WireD、SPI4、MCS-5l单片机采用同步控制方式，具有固定的机器周期。

浙江省单片机及应用技术三级试卷52

B、个人计算机
C、当前正在执行的指令的地址
D、控制器中指令寄存器的地址
13、C51 中 unsigned char 类型的取值范围为 (13) 。．
A、0-255
B、‘a’～‘Z’ C、-128～127
D、1～256
14、扩展的存储芯片是作为程序存储器还是数据存储器关键看 (14) 。
A、看其输出允许控制信号是和单片机的 RD 信号还是和 PSEN 信号相连
17、假定(A)=1CH，(R0)=39H，(39H)=68H,执行以下程序段后，A 的内容为 (17) 。
ANL A， #39H
ORL 39H， A
计算机等级考试试卷(三级单片机及嵌入式系统应用) 第 2 页 (共 7 页)
XRL A， @R0
CPL A A、0CAH
B、1BH
C、9FH
D、67H
C、相对寻址方式 D、直接寻址方
式
20、5l 单片机串行通信中第九位数据位的说明，错误的是 (20) 。
2
A、发送时，第九位数据由用户通过指令进行设置 B、接收到的第九数据位保存在 SCON 中的 RB8 C、发送数据的第九数据位内容在 SCON 中的 TB8 位预先准备好 D、帧发送时使用指令把 TB8 位的状态送入发送 SBUF 中
选择，A1 A0 为“00”则选择 A 口，为“01”则选择 B 口，其余类推。现若 A1、A0 引脚
分别与单片机的 P2.1，P2.0 连接，则芯片的 A、B、C、D 口的地址可能为 (16) 。
A、0000H--0003H
B、00XXH--30XXH
C、00XXH--03XXH
D、20h--23h
面哪种定义最合适 (11) 。

浙江省2009年10月单片机原理及应用试题

浙江省2009年10月自学考试单片机原理及应用试题课程代码：02358一、单项选择题(本大题共5小题，每小题2分，共10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.单片机中用于存放程序状态信息的寄存器是( )A.ACCB.PSWC.PCD.DPTR2.MCS-51外扩存储器时，系统的高8位地址总线是由_________口构成。

错填、不填均无分。

6.堆栈指示寄存器的符号是______________，复位后它的内容是______________。

7.MCS-51系统中，当PSEN引脚为低电平时，表示CPU要从________________读取信息。

8.当（RS1，RS0）=（1，1）时，工作寄存器R7对应内部RAM中的________________字节单元。

9.MOV C，15H源操作数的寻址方式为______________寻址。

10.MCS-51单片机在逻辑上有______________个存储空间。

11.MCS-51单片机有______________个中断源。

12.计算机的数据传送主要有两种方式：______________和______________。

13.为使单片机系统能输出一定频率的正弦波电压信号，应增加______________。

三、名词解释(本大题共3小题，每小题3分，共9分)14.变址寻址方式15.中断四、简答题(本大题共5小题，每小题5分，共25分)17.简述8051片内RAM的空间分配。

三级单片机习题(附加)参考答案

1、当MCS-51引脚ALE有效时，表示从P0口稳定地送出了低8位地址。

2、MCS-51的堆栈是软件填写堆栈指针临时在片内数据存储器内开辟的区域。

3、当使用8751且EA=1，程序存储器地址小于 1000H 时，访问的是片内ROM。

4、MCS-51系统中，当PSEN信号有效时，表示CPU要从外部程序存储器读取信息。

5、MCS-51有4组工作寄存器，它们的地址范围是 00H~1FH 。

6、MCS-51片内20H~2FH范围内的数据存储器，既可以字节寻址又可以位寻址。

7、PSW中RS1 RS0=10时，R2的地址为 12H 。

8、PSW中RS1 RS0=11时，R2的地址为 1AH 。

9、单片机系统复位后，（PSW）=00H，因此片内RAM寄存区的当前寄存器是第 0 组，8个寄存器的单元地址为 00H ~ 07H 。

10、PC复位后为 0000H 。

11、一个机器周期= 12 个振荡周期= 6 个时钟周期。

12、PC的内容为将要执行的的指令地址。

13、在MCS－51单片机中，如果采用6MHz晶振，1个机器周期为 2us 。

14、内部RAM中，位地址为30H的位，该位所在字节的字节地址为 26H 。

15、若A中的内容为63H，那么，P标志位的值为 0 。

16、8051单片机复位后，R4所对应的存储单元的地址为 04H ，因上电时PSW=00H 。

这时当前的工作寄存器区是第 0 工作寄存器区。

17、使用8031芯片时，需将/EA引脚接低电平，因为其片内无程序存储器。

18、片内RAM低128个单元划分为哪3个主要部分：工作寄存器区、位寻址区和用户RAM区。

19、通过堆栈操作实现子程序调用，首先就要把 PC 的内容入栈，以进行断点保护。

调用返回时，再进行出栈保护，把保护的断点送回到 PC 。

20、MCS－51单片机程序存储器的寻址范围是由程序计数器PC的位数所决定的，因为MCS－51的PC是16位的，因此其寻址的范围为 64 KB。