2008年同等学力申硕电子科学与技术真题及答案

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2008年硕士研究生入学考试试题.doc

2008年硕士研究生入学考试试题.doc

七、(20分)
组合逻辑电路设计
设计用3个开关控制一个电灯的电路,要求改变任何一个开关的状态都能控制电灯由亮变灭或者由灭变亮。

要求用3-8译码器来实现。

八、(20分)
时序逻辑电路分析。

分析图6中时序逻辑电路,写出电路的驱动方程、状态方程和输出方程,画出状态转换图。

九、(20分)
时序逻辑电路设计
设计一个可控进制的计数器,当输入控制变量M=0时工作在五进制,M=1时工作在十五进制。

在图中标出计数输入端和进位输出端。

十、(10分)
写出图7中电路名称,分析电路的功能,画出Uo 和Uc 的波形图,在图中注明脉冲宽度和时间(单位是μS )。

图5
图6 时序逻辑电路
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K
Q
Q
J
K
Q
Q
.
.
Y
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CP
1。

2008年同等学力人员申请硕士学位学科综合水平全国统一考试工商管理试卷及答案

2008年同等学力人员申请硕士学位学科综合水平全国统一考试工商管理试卷及答案

2008年同等学力人员申请硕士学位学科综合水平全国统一考试工商管理试卷一、单项选择题(每小题1分,共10分) 1.通过揭示组织形成、生存和发展的内在必然性探讨管理原理和方法的流派是:(C)A.管理过程流派B.管理科学流派C.组织管理流派D.经验管理流派2.早期人际关系学说的奠基人是:(B)A.泰罗B.梅奥C.法约尔D.马克斯·韦伯3.随着经验增加,能够形成单位成本下降趋势的原因不包括:(D)A.劳动效率B.工艺改进C.通过各种改善方式,生产出更标准化的产品D.生产出更高质量的产品4.小型多种经营企业,且大部分经营业务集中在少数几个密切相关的产品——细分市场上,应选择哪种矩阵分析其经营业务:(B)A.波士顿矩阵B.产品-市场演变矩阵C.通用矩阵D.同时运用产品-市场演变矩阵和通用矩阵5.根据家庭规模细分消费者市场,这被称为:(C)A.心理细分B.行为细分C.人口细分D.地理细分6.海尔集团在冰箱产品获得成功后,将“海尔”品牌使用到空调、洗衣机、手机等产品上,这被称为:(B)A.多品牌策略B.品牌扩展策略C.个别品牌策略D.分类品牌策略7.售后服务属于:(B)A.核心产品B.附加产品C.形式产品D.潜在产品8.优先股因为有固定股利而又无到期日,因而优先股股利可以看作:(B)A.普通年金B.永续年金C.延期年金D.即付年金9.一般来说,一个企业的速冻比率、流动比率和现金比率由大到小排列的顺序为:(D)A.速动比率、流动比率、现金比率B.速动比率、现金比率、流动比率C.现金比率、速动比率、流动比率D.流动比率、速动比率、现金比率10.某企业税后净利润为70万元,所得税率为30%,利息费用为20万元,则利息周转倍数为:(D)A.3.5B.4.5C.5D.6计算过程:[70/(1-30%)+20]/20=6二、多项选择题(每小题2分,共8分)11.程序化决策的传统手段包括:(BDE)A.判断、直觉B.习惯C.经验D.标准操作规程E.组织结构12.下面哪些是企业远景的要素:(ABCE)A.界定企业当前业务B.确定衡量效益的标准C.界定实现发展规划的具体步骤D.界定满足顾客需求的方式E.界定企业远景的特殊性13.菲利普·科特勒提出的“大市场营销”理论除了包括传统的4P外,还包括如下哪几个P?(AD)A.权力(Power)B.过程(Process)C.有形展示(Physical evidence)D.公共关系(Public relations)E.地点(Place)14.下列各项财务指标中,反映企业资产周转状况的指标有:(AD)A.应收帐款周转率B.流动比率C.资产负债率D.总资产周转率E.利息周转倍数三、名词解释(每小题3分,共12分)1.管理:是组织中维持集体协作行为延续发展的有意识的协调行为。

2008年同等学力申硕全国统考计算机科学与技术真题与答案

2008年同等学力申硕全国统考计算机科学与技术真题与答案

2008年同等学力申硕全国统考计算机科学与技术试卷计算机科学与技术试卷第一部分数学基础课程第二部分专业知识课程Ⅰ.计算机系统结构Ⅱ.计算机网络Ⅲ.软件工程Ⅳ.人工智能原理Ⅴ.计算机图形学考生须知1. 本试卷满分为100 分,包括数学基础课程和专业知识课程两部分。

数学基础课程满分40分,每位考生必答;专业知识课程包括五门课程,每门课程满分30 分,考生须从中任选2 门作答,多选者只按前选课程计分。

2. 请考生务必将本人准考证号最后两位数字填写在本页右上角方框内。

3. 考生一律用蓝色或黑色墨水笔在答题纸指定位置上按规定要求作答,未做在指定位置上的答案一律无效。

4. 监考员收卷时,考生须配合监考员验收,并请监考员在准考证上签字(作为考生交卷的凭据)。

否则,若发生答卷遗失,责任由考生自负。

计算机科学与技术试卷第1 页共10 页第一部分数学基础课程(共40 分)一、用逻辑符号形式化下列语句(本大题共2 小题,每小题2 分,共4 分)1.每个人的指纹都不相同。

2.自然数不是奇数就是偶数,且奇数不能被2 整除。

二、填空题(本大题共4 小题,第1 小题每空1 分,第2、3、4 小题每空2 分,共10 分)1.设A、B 均为有穷集合,A 和B 的基数分别是m 和n(m >0, n >0)。

(1)当m 和n 满足时,存在从A 到B 的双射函数。

此时共可生成个不同的双射函数。

(2)当m 和n 满足时,存在从A 到B 的单射函数。

此时共可生成个不同的单射函数。

2.已知5 位老师和3 位学生围圆桌就座,如果要求学生两两不相邻,则有种就座方案。

3.整除2310 的正奇数有个。

4.设图的顶点集合为V G ,边集合为。

则G的生成树有G 1 2 3 4( ) { , , , } v v v v =} 1 2 2 3 3 4 4 1 1 3( ) { , , , , E G v v v v v v v v v v =棵。

2008年同等学力申硕计算机科学与技术真题及答案

2008年同等学力申硕计算机科学与技术真题及答案

间为
拍。
2.有编号为 0,1,2,…,31 共 32 个处理机(结点),采用移数函数构成互连网,则网络直径

,结点度为

二、问答题(本大题共 3 小题,每小题 2 分,共 6 分) 一台计算机以字为单位访问存储器。
其主存共包含 4096 个存储块,每个存储块大小为 128
个字。采用组相联映像方式的 Cache 由 64 个存储块构成,每组包含 4 个存储块。 1.问主存地址需要用多少位表示? 2.问 Cache 地址需要用多少位表示? 3.计算主存地址格式中,区号、组号、块号和块内地址字段的位数。
三、问答和计算题(本大题共 4 小题,共 14 分) 1.(3 分)试说明以太网规定的最短帧长是多少?为什么要限制最短帧长? 2.(3 分)试说明 TCP 协议是如何提供端到端可靠的传输服务的? 3.(4 分)考虑一条带宽为 1.6Mbps 的链路,往返传播时延为 45ms,假设数据帧的大小为 1KB。
1.设 A、B 均为有穷集合,A 和 B 的基数分别是 m 和 n(m >0, n >0)。
(1)当 m 和 n 满足
时,存在从 A 到 B 的双射函数。
此时共可生成
个不同的双射函数。
(2)当 m 和 n 满足 此时共可生成
时,存在从 A 到 B 的单射函数。 个不同的单射函数。
2.已知 5 位老师和 3 位学生围圆桌就座,如果要求学生两两不相邻,则有 案。
考生须知
1. 本试卷满分为 100 分,包括数学基础课程和专业知识课程两部分。数学基础课程满分 40 分,每位考生必答;专业知识课程包括五门课程,每门课程满分 30 分,考生须从中任选 2 门作答,多选者只按前选课程计分。

2008年同等学力申硕公共管理真题及答案

2008年同等学力申硕公共管理真题及答案

绝密★启用前2008年同等学力人员申请硕士学位学科综合水平全国统一考试公共管理试卷第一部分公共基础部分第二部分专业知识部分Ⅰ.公共行政学Ⅱ.社会保障学Ⅲ.教育管理学Ⅳ.卫生事业管理学Ⅴ.土地资源管理学考生须知1.本试卷满分为100分,包括公共基础部分和专业知识部分。

公共基础部分满分30分,每位考生必答;专业知识部分含公共行政学、社会保障学、教育管理学、卫生事业管理学、土地资源管理学五部分,各部分满分70分,考生可根据自己拟申请硕士学位的专业选择其中一部分作答,多选者只按前选部分计分。

2.请考生务必将本人准考证号最后两位数字填写在本页右上角方框内。

3.必答题部分的单项选择题的答案一律用2B铅笔填涂在指定的答题卡上,凡做在试卷或答题纸上的答案一律无效;其它题一律用蓝色或黑色墨水笔在答题纸指定位置上按要求作答,未做在指定位置上的答案一律无效。

4.在答题卡上正确的填涂方法为:在答案所代表的字母上划线,如[A][B][C][D]。

5.监考员收卷时,考生须配合监考员验收,并请监考员在准考证上签字(作为考生交卷的凭据)。

否则,若发生答卷遗失,责任由考生自负。

公共管理试卷第1页共7页第一部分公共基础部分(共30分,每位考生必答)一、单项选择题(答案一律用2B铅笔填涂在答题卡上,答在试卷或答题纸上无效,每小题1分,共10分)1.古立克提出了理论。

A.POSDCORB B.PDCA C.XYABC D.PARTBSC 2.宪政主义与管理主义是公共行政选择的两种不同价值,宪政主义强调。

A.绩效B.效率C.正义D.市场3.静态层行政组织的构成要件主要包括机构设置、和人员配置等。

A.运行机制B.行政授权C.权责划分D.心理互动4.在我国直辖市中,街道办事处属于。

A.办事机构B.职能机构C.辅助机构D.派出机构5.行政领导活动实质上是领导者、被领导者、群体目标和之间的互动。

A.主观认识B.客观环境C.人际关系D.个体行为6.与首长制相比,委员会制的缺陷表现为。

2008统考综合试题和答案

2008统考综合试题和答案

电子设计工程师认证综合知识试题(B卷)一、是非题(每题1.5分,共24分)1.()叠加定理既适用于线性电路,也适用于非线性电路。

2.()电容器的品质因素Q值一般要高于电感器的品质因素。

3.()在检测幅度较小的输入信号时,示波器输入探头的衰减开关应置于X1的位置。

4.()两只硅晶体二极管串接后,可作1.4伏的低压稳压管使用。

5.()测量某一电路上的电压时,希望电压表的输入阻抗尽可能小一点。

6.()为使输出电压稳定,稳压电源的输出电阻应愈大愈好。

7.()只要工作点合适,晶体管放大器就不会使输出信号的波形产生失真。

8.()放大电路只要引入串联负反馈,其输入电阻一定会增加。

9.()同一放大电路,若要其增益增大,则其通频带宽度将减小。

10.()差动(差分)放大器的电压增益仅与其输出方式(单端或双端)有关,而与输入方式无关。

11.()与门的多余输入端,在使用时,最好接低电平0。

12.()采样定理指明,采样频率应等于或大于被采样信号中的最高频率。

13.()时序逻辑电路的输出状态与输入信号的历史状态有关,它具有记忆功能。

14.()触发器复位端(清零端)至输出端的时延一定小于输入端至输出端的时延。

15.()串联调整型稳压电源的输出电压为12V,则电源变压器次级(初级为220V)的有效值一般要大于18伏。

16.()单片机系统中的时钟振荡周期即为指令周期。

二、选择题(每题2分,共26分)1.()标注为223的片状电阻(贴片电阻)器,其阻值为:A、22ΩB、223ΩC、22KΩD、220Ω2.()标注为4n7的电容器,其电容值为:A、47pFB、470pFC、4700pFD、4.7pF3.()晶体管共发射极的截止频率fβ的定义是:A、β=β0时的工作频率B、β=0.707β时的工作频率C 、β=2β0时的工作频率D 、β=1时的工作频率4. ( )一方波经过放大器后,其前沿的上升时间变大,其主要原因可能为:A 、 放大器的上限截止频率f H 低B 、 放大器的上限截止频率f H 高C 、 放大器的下限截止频率f L 低D 、 放大器的下限截止频率f L 高5. ( )在共e 、共b 、共c 三种放大电路中,输入阻抗最高的放大器是:A 、共e 放大器B 、共b 放大器C 、共e 、共b 放大器D 、共c 放大器6. ( )已知电路如图,输入信号为周期2μs 的对称方波,要使输出信号仍为对称方波,则RC 的乘积应为: A 、 RC = 1μs B 、 RC = 2μs C 、 RC >>1μs D 、 RC <<1μs7. ( )已知电路如图,其主要功能为:8. ( )与非、或非门的封门端电平(输出端状态仅由此端决定,与其它输入端状态无关)为: A 、均为低电平0B 、均为高电平1C 、与非门为1,或非门为0D 、与非门为0,或非门为19. ( )为了提高放大器输出电压的稳定性,并降低此放大器对前级电路的影响,应采用的反馈方式是: A 、电压串联负反馈 B 、电压并联负反馈 C 、电流串联负反馈D 、电流并联负反馈 10. ( )用异或门可对两同频率方波进行相位比较(相位检测),可判断出两输入信号间相位差的最大值可达: A 、45° B 、90° C 、135°D 、180°11. ( )在实验数据处理中,从精度出发,2A 、2×103mA 、2000mA 表述的数A 、 带通滤波B 、 带阻滤波C 、 低通滤波D 、 高通滤波据:A、三者精度均一样B、2A、2×103mA精度一样C、2A、2000mA精度一样D、2×103mA、2000mA精度一样12.()要产生频率为赫兹量级至几兆赫兹量级、频率连续变化的正弦波信号,应选用:A、RC振荡器B、LC三点式振荡器C、石英晶体振荡器D、锁相环式振荡器13.()汇编语言与硬件电路及CPU间的关系是:A、不是面向硬件电路的计算机语言,与CPU有关。

2008年同等学力申硕机械工程真题

2008年同等学力申硕机械工程真题

2008年同等学力申硕机械工程真题(总分:260.00,做题时间:180分钟)一、考生须知 (总题数:1,分数:0.00)二、第一部分必考题(两组,共60 分) (总题数:3,分数:8.00)1.控制系统的基本性能要求一般有 1、 2和 3。

(分数:3.00)填空项1:__________________填空项1:__________________填空项1:__________________2.若系统的 1是线性的,则这种系统是 2,线性系统最重要的特性 3是原理。

(分数:3.00)填空项1:__________________填空项1:__________________填空项1:__________________3.方块图是系统中各环节的功能和信号流向的图解表示方法,由 1、 2和分支点等构成。

(分数:2.00)填空项1:__________________填空项1:__________________三、简答题(本大题共4 小题,每小题3 分,共12 分)(总题数:4,分数:12.00)4.试解释机械工程系统中的信息传递、反馈及反馈控制。

(分数:3.00)__________________________________________________________________________________________ 5.试述机械控制工程系统的数学模型的概念。

(分数:3.00)__________________________________________________________________________________________ 6.叙述系统时间响应的概念和组成。

(分数:3.00)__________________________________________________________________________________________ 7.试述实现校正的方式。

同等学历申硕英语真题及答案 2008年

同等学历申硕英语真题及答案 2008年

2008年同等学力人员申请硕士学位英语水平全国统一考试试题ENGLISH QUALIFYING TEST FOR MASTER-DEGREE APPLICANTS(Time Limit: 150 minutes)Paper One 试卷一Part I Dialogue Communication (10 minutes, 10 points)Part II Vocabulary (10 minutes, 10 points)Part III Reading Comprehension (45 minutes, 25 points)Part IV Cloze (15 minutes, 15 points)Part V Error Detection (10 minutes, 5 points)Paper Two 试卷二Part I Translation (30 minutes, 20 points)Part II Writing (30 minutes, 15 points)Paper One 试卷一(90 minutes)Part I Dialogue Communication (10 minutes, 10 points)Section A Dialogue CompletionDirections:In this section, you will read 5 short incomplete dialogues between two speakers, each followed by 4 choices marked A, B, C and D. Choose the answer that best suits the situation to complete the dialogue by marking the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET.1.A: Bob, would you mind turning down the TV a little? I’m talking on the phone, and I’m having a hard time hearing.B:A.Please forgive me. B.Oh, sure! I’m sorry about that.C.You should have told me earlier. D.I’m sorry to hear about it.2. A: Hi, I’m your neighbor in 405, next door. I’m Sunny Chan.B:A.I moved here about a week ago. B.Hope we could become good neighbors.C.Hi! Everyone here seems very friendly. D.Jill Kingston. Nice to meet you.3. A: Could you run me over to the office? I’m late. My clock must be slow.B:A.Yes, never mind. I would rather give you a lift.B.All right. But you should buy a new clock.C.It’s my pleasure. May I help you fix your clock, too?D.Yeah, I’ll be glad to drop you off on my way to work.4. A:I’m sorry. He’s not in his office.B:A.Are you sure he will be back soon? B.Would you like to leave a message?C.Can you take a message for me? D.Shall I call him sometime later?5. A: Do you mind if I take off my jacket?B:A.Of course not, make yourself at home. B.Oh, it’s very kind of you to do so.C.I’ll be happy if I can be of any help. D.Yes, it’s pretty warm in here.Section B Dialogue ComprehensionDirections: In this section, you will read 5 short conversations between a man and a woman. At the end of each conversation there is a question followed by 4 choices marked A, B, C and D. Choose the best answer to the question from the 4 choices by marking the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET.6.Man: Bob and Sue seem never discipline their daughter. She’s real nuts.Woman:They are kept in the dark about their daughter’s behavior at school.Question:What can we learn about Bob and Sue’s daughter?A.She likes to eat nuts.B.She is self-disciplined.C.She behaves badly at school.D.She enjoys leaving her parents in the dark.7.Woman:Now, Richard, would you care to explain how the answers to the test questions appeared on your desk?Man:I can’t, Professor Harley. Someone must have left them on my desk.Question:What is the man’s problem?A.He is suspected of cheating.B.He left the answers on his desk.C.He doesn’t know how to explain.D.He didn’t know the answers to the questions.8.Woman:Don’t forget to drop me a line when you settle down.Man:I won’t. I’ll keep you posted.Question:What does the man mean?A.He’ll write to the woman.B.He’ll tell the woman his new address.C.He’ll visit the woman once in a while.D.He’ll chat with the woman on the phone.9.Man:Betty, how was your trip to the museum with tom this afternoon?Woman:Don’t ask me.Question:What does the woman mean?A.Something about the museum interested her.B.Something was wrong with the trip.C.She doesn’t know anything about the museum.D.She doesn’t want to answer the man’s question.10.Man:Hey, Mary. I was invited to be a judge for the Miss America Beauty Contest.Woman:Oh, really? Come on, you’re pulling my leg.Question:what does the woman mean?A.She has no chance to win.B.The man is encouraging her.C.She’ll attend the contest.D.The man is trying to fool her.Part II Vocabulary (10 minutes, 10points)Section ADirections:In this section there are 10 sentences, each with one word or phrase underlined. Choose the one from the 4 choices marked A, B, C and D that best keeps the meaning of the sentence. Then mark the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET.11.The survey does not allow for the fact that some students are attending part-time.A.explain B.deny C.consider D.recognize12.British scientists have found how to diagnose the disease, which causes loss of memory and personality change.A.control B.determine C.prevent D.treat13.Witnesses were allegedly tortured or subjected to pressure to fabricate evidence against him.A.fix up B.take up C.pack up D.make up14.So instead we spent the whole afternoon hanging around in the gorgeous autumn sun.A.golden B.beautiful C.warm D.shining15.I couldn’t work out why anyone would invent something so boring.A.draw up B.bring about C.put forward D.figure out16.You can easily find out the benefits of flexible working for both you and your employer.A.loose B.effective C.elastic D.resourceful 17.The State Department has issued a regulation abolishing the special privileges for government officials.A.grants B.rights C.advantages D.interests 18.Will Americans go for AT&T’s plan of pushing the wireless services in the U.S.?A.support B.adopt C.hinder D.attack 19.What lies in pieces around them represents, in effect, a unique private exhibition open to a lucky few.A.in short B.in particular C.in fact D.in turn 20.The weekend event will be centred around Wye College in Ashford, Kent, but the outing to the docks should be the highlight.A.climax B.pleasure C.expectation D.surprise Section BDirections: In this section, there are 10 incomplete sentences. For each sentence there are 4 choices marked A, B, C and D. Choose the one that best completes the sentence. Then mark the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET.21.Then in June 1967 the country diplomatic relations with Israel after the outbreak of the Six Day War.A.broke away B.broke off C.cut out D.cut down 22.Everyone has faced the embarrassing of deciding how much extra to give a waiter or taxi-driver.A.incident B.event C.dilemma D.menace 23.The school arranged road trip appears to the spring break.A.conform to B.coincide with C.consist in D.collide with 24.The new airport terminal is sure to the development of tourism.A.imitate B.fascinate C.impose D.facilitate 25.The Huntington Library has an collection of rare books and manuscripts of British and American history and literature.A.intensive B.intentional C.extensive D.extensional 26.Inflation will reach its highest in a decade across most of Asia this year, threatening to recent productivity gains.A.reverse B.reserve C.retrieve D.revise 27.Those governments will provide big food and fuel according to the Asian Development Bank.A.substitutes B.substances C.subsequences D.subsidies 28.In mild winters apple buds began to break soon after Christmas, leaving them to frost damage.A.reluctant B.tough C.hostile D.vulnerable 29.What is happening is a survival-of-the-fittest struggle affecting smaller factories in relatively low-tech, labor-intensive industries.A.primarily B.rationally C.primitively D.respectively 30.A traditional critic has the advantage of being able to standards and values inherited from the past.A.turn up B.turn over C.turn to D.turn inPart III Reading Comprehension (45 minutes, 25points)Directions:There are 5 passages in this part. Each passage is followed by 5 questions or unfinished statements. For each of them there are 4 choices marked A, B, C and D. Choose the best one and mark the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET.Passage OneThe job was done, and it was time for a last cigarette. Eddie began tapping the pockets of his overalls, looking for the new packet of Marlboro he bought that morning. It was not there.It was as he swung around to look in his toolbox for the cigarettes that Eddie saw the lump. Right in the middle of the brand new bright red carpet, there was a lump. A lump the size of a packet of cigarettes.“I’ve done it again!” said Eddie angrily. “I’ve left the cigarettes under the carpet!”He had done this once before, and taking up and refitting the carpet had taken him two hours. Eddie was determined that he was not going to spend another two hours in this house. He decided to get rid of the lump another way. It would mean wasting a good packet of cigarettes, nearly full, but anything was better than taking up the whole carpet and fitting it again .He turned to his toolbox for a large hammer.Eddie didn’t want to damage the carpet itself, so he took a block of wood and placed it on top of the lump. Then he began to beat the block of wood as hard as he could. He kept beating, hoping Mrs. Vanbrugh wouldn’t hear the noise and come to see what he was doing. It would be difficult to explain why he was hammering the middle of her beautiful new carpet… The lump was beginning to flatten out.After three or four minutes, the job was finally finished. Eddie picked up his tools, and began to walk out to his car. Mrs. Vanbrugh accompanied him. She seemed a little worried about something.“Young man, while you were working today, you didn’t by any chance see any sign ofArmand, did you? Armand is my bird. I let him out of his cage, you see, this morning, and he’s disappeared. He likes to walk around the house, and he usually just comes back to his cage after an hour or so and gets right in. Only today he didn’t come back. He’s never done such a thing before, it’s most peculiar…”“No, madam, I haven’t seen him anywhere,” said Eddie, as he reached to start the car.And he saw his packet of Marlboro cigarettes on the panel, where he had left it at l unchtime….And he remembered the lump in the carpet…31.What did Eddie want to do when he had finished fitting the carpet?A.To have a cigarette. B.To hammer the carpet flat.C.To put back his tools. D.To start work in the dining room.32.Why didn’t Eddie take out the thing under the carpet?A.It was impossible for him to take up the carpet once it was fitted.B.He didn’t need the cigarettes because he had some more in the car.C.It would take too long to take up the carpet and refit it.D.He intended to come back and remove the lump the next day.33.What did Eddie do with the hammer?A.He drove nails into the lump. B.He fixed his toolbox.C.He flattened the lump. D.He refitted the carpet.34.Mrs. Vanbrugh worried that .A.her pet was nowhere to be found B.fitting the carpet would be expensive C.Eddie would smoke in the house D.Eddie hadn’t done a proper job35.What was really under the carpet?A.The packet of cigarettes. B.Eddie’s hammer.C.A lump of wood. D.The missing pet.Passage TwoIf two scientists at Los Alamos National Laboratory are correct, People will still be driving gasoline-powered cars 50 years from now, giving out heat-trapping carbon dioxide into the atmosphere—and yet that carbon dioxide will not contribute to global warming. The scientists, F. Jeffrey Martin and William L. Kubic Jr., are proposing a concept, which they have patriotically named Green Freedom for removing carbon dioxide from the air and turning it back into gasoline.The idea is simple. Air would be blown over a liquid solution which would absorb the carbon dioxide. The carbon dioxide would then be extracted and subjected to chemical reactions that would turn it into fuel. Although they have not yet built a fuel factory, or even asmall prototype, the scientists say it is all based on existing technology. “Everything in the concept has been built, is operating or has a close cousin that is operating,” Dr. Martin said. The proposal does not violate any laws of physics, and other scientists have independently suggested similar ideas.In the efforts to reduce humanity’s emissions of carbon dioxide, three solutions have been offered; hydrogen-powered cars, electric cars and biofuels. Biofuels are gasoline substitutes produced from plants like corn or sugar cane. Plants absorb carbon dioxide as they grow, but growing crops for fuel takes up wide strips of land. Hydrogen-powered cars emit no carbon dioxide, but producing hydrogen requires energy, and if that energy comes from coal-fired power plants, then the problem has not been solved. The problem with electric cars is that they have typically been limited to a range of tens of miles as opposed to the hundreds of miles that can be driven on a tank of gas.Gasoline, it turns out, is an almost ideal fuel (except that it produces carbon dioxide). If it can be made out of carbon dioxide in the air, the Los Alamos concept may mean there is little reason to switch, after all.“It’s definitely worth pursuing,” said Martin I. Hoffert, a professor of physics at New York University. “It has a couple of pieces to it that are interesting.” Other scientists also said the proposal looked promising but could not evaluate it fully because the details had not been published.36.What is most remarkable about the proposal made by the two scientists?A.It is given a patriotic name.B.No law of physics is violated.C.It is based on existing technology.D.Carbon dioxide can be converted into fuel.37.What is the biggest problem with hydrogen-powered cars?A.There is no cheap source of hydrogen.B.There might be a safety problem in hydrogen production.C.They may still be a cause of global warming.D.They are not suitable for long-distance travel.38.If what is proposed by the two scientists becomes true,.A.air pollution will become a thing of the pastB.there will be no need for gasoline substitutesC.people will be able to use much cheaper energyD.there will be no more biofuel-powered vehicles39.Which of the following can best describe the attitude of Martin I. Hoffert to the proposal?A.Indifferent. B.Positive. C.Suspicious. D.Critical.40.The passage is mainly written to .A.introduce a new concept B.compare different energy sourcesC.stress the importance of gasoline D.discuss solutions to global warmingPassage ThreeIn her international bestselling Talk to the Hand, author Lynne Truss argues that common courtesies such as saying “Excuse me” are practically extinct. There are certainly plenty who would agree with her.Is it really true? We decided to find out by experiments. In dozens of American cities, our reporters performed two experiments: “door tests” (would anyone hold one open for them?); and “document drops” (who would help them retrieve a pile of “accidentally” dropped papers?). Along the way, the reporters encountered all types; men and women of different races, ages, professions, and income levels.While 90 percent of the people passed the door test, only 55 percent passed the document drop. Are people less likely to help others when doing so takes extra effort or time? Not always, the reporters found. Take the pregnant woman who thought nothing of bending down to help us with our papers. Or the woman named Liz who balanced two coffees, her keys and her wallet on a takeout tray with one hand, while picking up papers off the wet pavement with the other, her reason for helping? “I was there,” she said.Overall, men were the most willing to help, especially when it came to document drops. In those, men offered aid 63 percent of the time, compared to 47 percent among women. Of course, men weren’t entirely democratic about whom they’d help. All of them held the door for the female reporter, and were more than twice as likely to help her pick up fallen papers than they were to help our male reporter.By far, the most common reason people cited for being willing to go out of their way to help others was their upbringing. “It’s the way I was raised,” said one young woman who held a door open despite struggling with her umbrella on a rainy day in Brooklyn.We realize this isn’t a rigorous scientific study, but we believe it is a reasonable real-world test of good manners around the globe. And it’s comforting to know that in a place where millions of people push one another each day to get ahead, they’re able to do it with a smile. Hey, if they can make nice here, they can make nice anywhere.41.Which of the following is the best word to describe the experiments?A.Scientific B.Biased. C.Revolutionary. D.Realistic.42.The examples of the pregnant woman and Liz are used to show that some people .A.may take the trouble to help others B.won’t take the trouble to help others C.may help others save time D.Won’t help others save time43.According to the experiments, .A.women are more carefulB.women are more likely to need helpC.men are more ready to helpD.men are more democratic in helping others44.Helping others is a behavior that is largely influenced by .A.social norm B.family educationC.specific situation D.personal character45.The results of the experiments have shown that common courtesies .A.are still with us B.are disappearingC.vary with professions D.needs rigorous studyPassage FourWithin a large concrete room, cut out of a mountain on a freezing-cold island just 1, 000 kilometers from the North Pole, could lie the future of humanity.The room is a vault(地下库)designed to hold around 2 million seeds, representing all known varieties of the world’s crops. It is being built to safeguard the world’s food supply against nuclear war, climate change, terrorism, rising sea levels, earthquakes and the collapse of electricity supplies. “If the worst came to the worst, this would allow the world to reconstruct agriculture on this planet,” says Cary Fowler, director of the Global Crop Diversity Trust, an independent international organization promoting the project.The Norwegian(挪威的)government is planning to create the seed bank next year at the request of crop scientists. The $3 million vault will be built deep inside a sandstone mountain on the Norwegian Arctic island of Spitsbergen. The vault will have metre-thick walls of reinforced concrete and will be protected behind two airlocks and high-security doors.The vault’s seed collection will represent the products of some 10, 000 years of plant breeding by the world’s farmers. Though most are no longer widely planted, the varieties contain vital genetic properties still regularly used in plant breeding.To survive, the seeds need freezing temperatures. Operators plan to replace the air inside the vault each winter, when temperatures in Spitsbergen are around 18℃. But even if some disaster meant that the vault was abandoned, the permanently frozen soil would keep the seeds alive. And even accelerated global warming would take many decades to penetrate the mountain vault.“This will be the world’s most secure gene bank,” says Fowler. “But its seeds will only be used when all other samples have gone for some reason.”The project comes at a time when there is growing concern about the safety of existing seed banks around the world. Many have been criticized for their poor security, ageing refrigeration(冷藏)systems and vulnerable electricity supplies.The scheme won UN approval at a meeting of the Food and Agriculture Organization in Rome in October 2005. A feasibility study said the facility “would essentially be built to lastforever”.46.The Norwegian vault is important in that .A.the seeds in it represent the rarest varieties of world’s cropsB.the seeds in it could revive agriculture if the worst thing should happenC.it is built deep in a mountain on a freezing-cold Arctic island.D.it is strong enough against all disasters caused by man and nature47.The seed band project was proposed by .A.the Norwegian government B.Norwegian farmersC.Spitsbergen residents D.agricultural scientists48.The seeds in the vault will be stored .A.as samples of world crop varieties B.as products of world plant breedingC.for their valuable genetic properties D.for their resistance to plant diseases49.For the seed band project to be successful, the most important factor is probably .A.constructing tight airlocks B.maintaining high securityC.keeping freezing temperatures D.storing large quantities of seeds50.Which of the following statements is true?A.The Norwegian vault models after existing seed banks.B.The Spitsbergen seed bank is expected to last 10,000 years.C.The existing seed banks have potential problems.D.The UN financed the Spitsbergen seed bank.Passage FiveProbably the hardest part of setting goals is the first step of actually deciding to take action! The first barrier facing most people is the incorrect assumption that goals are only for business people. The reality is everyone sets goals mentally throughout the day. There are always occasions where something has to be done at a particular time or in a particular place. Simple examples could be getting up at a certain time in order to be at work, or to meet with a friend for a leisure activity.The beauty of having goals is the uniqueness of each one to the goal setter. Whether it is personal, financial, business or spiritual, they are all specific to that person and their circumstances.The most important part initially is to write them down. Having goals written down gives you incredible power while helping you to focus on this area.Aim for something that will stretch you while remaining achievable. If you achieve your goal too easily, it is not high enough to make any significant change in your life and needs to be adjusted. On the other hand, if you consistently miss the goals, re-evaluate, and consider settingthem a little lower as you will only get discouraged and probably give up. The aim is to keep growing, and moving into a more satisfactory position for your particular circumstances.As you obtain the levels that you have set for yourself, always include a small reward at each point. This might only be a small thing in the early days like a meal out or a weekend vacation.Remember that these changes will not happen overnight and there will be a period of time when nothing seems to be happening. This is why the goals need to be detailed and as specific as possible with consequence and benefit.Allow some time on a daily basis to educate yourself on how to make the necessary adjustments in your life. This could include listening to a CD, or reading a book on motivation etc.A simple method to start with could be one goal in the main areas of life to be achieved in one month, six months, twelve months or five years. Break that down further into a daily, weekly and monthly system. Stay focused and disciplined to achieve all that you desire.51.The simple examples in Paragraph 1 convey the message that .A.goals are set mostly for important thingsB.most people know when it is time to set goalsC.people set goals to get things done all the timeD.it is necessary to set goals occasionally52.The charm of having goals is that each goal is .A.important B.motivated C.special D.spiritual53.A good goal is one that .A.keeps growing all the time B.is high enough yet attainableC.moves one into a satisfactory position D.is evaluated from time to time54.Goals have to be detailed so that people .A.can know their achievements at each stageB.will eventually reach the levels set for themselvesC.may get small rewards such as a meal outD .can adjust them on various occasions55.For a goal to be achieved, one has to .A.believe in what he is doing B.adapt oneself to new changesC.divert from routine sometimes D.concentrate on it until it is attained Part IV Cloze (15 minutes, 15 points)Directions:In this part, there is a passage with 15 blanks. For each blank there are 4 choices marked A, B, C and D. Choose the best answer for each blank and mark the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET.A presentation has two important components: what you say and56 you deliver it. Theterm delivery covers a wide57 of features of speaking and eye contact is one of them.The appropriate use of eye contact58 from one culture to another. In some cultures, women are59 to lower their eyes in most communication60 ; in others, younger people must keep their eyes lowered when addressing older people.61 , in the United States,62 you are addressing an individual, a small group of people, or a larger audience, you are expected to look at them. You do not have to stare63 and continuously;64 , it is appropriate when speaking to one person to65 occasionally. In a small group you should look around at the different members of the group.66 when addressing a larger audience, you should try to make eye contact with different people around the room. It is important to look at the67 Audience, not just the people in the center of the room,68 you will probably have to turn your head and/or your body in order to make proper eye contact with people69 at the sides of the room. If you look at the floor or the ceiling, you will give the impression that you are not interested in your audience. A speaker establishes friendly relationship with the audience mainly70 eye contact, and good relationship is essential to the success of any speech.56.A.why B.whom C.how D.where 57.A.stretch B.expanse C.extent D.range 58.A.varies B.alters C.specifies D.differentiates 59.A.assumed B.proposed C.expected D.desired 60.A.domains B.settings C.scopes D.environments 61.A.Otherwise B.Moreover C.Likewise D.However 62.A.whether B.either C.though D.unless 63.A.constantly B.intensely C.properly D.desperately 64.A.in addition B.for instance C.in fact D.on the other hand 65.A.look away B.look around C.look back D.look over 66.A.Even B.And C.Thus D.Or 67.A.total B.overall C.utter D.entire 68.A.so B.yet C.then D.but 69.A.seat B.seated C.be seated D.being seating 70.A.upon B.after C.through D.untilPart V Error Detection (10 minutes, 5 points)Directions:In this part, there are 10 sentences. Each sentence has 4 underlined words or phrases marked A, B, C and D. Identify the one underlined word or phrase that must be changed in order for the sentence to be correct. Mark the corresponding letter with a single bar across the square brackets on your machine-scoring ANSWER SHEET.71.When I heard the principal called my name, I walked to the front to receive my diploma.A B C D72.Many a man has made a fortune and then have no idea what to do with it.A B C D73.When she arrived, I was pretty fed up, because I waited since eight o’clock.A B C D74.Learners cannot assimilate information that is presented to him at a higher level of abstractionA B Cthat at which they feel comfortable.D75.As you know that you must check in at least 30 minutes before takeoff for most flights.A B C D 76.After attracting more than a million marchers—four times of the size of the historical 1963A BMarch on Washington-the 2004 March for Women’s Life became the largest mass demonstrationCin history.D77.Although well receiving by business leaders, the book is not meant to whitewash any of theA B Cmiscalculations and shortsighted decisions of some corporate bosses.D78.Seriously, though, there’s always something you wish you have not done, but what is doneA B C Dcannot be undone.79.Comparing money with friends, I prefer the latter more, for real friends are not easy to come by,A B C Dand we must value their real friendship.80.Breaking up water into hydrogen and oxygen is a good example of as is known as a chemical change.A B C DPaper Two 试卷二Part I Translation (30 minutes, 20 points)Section ADirections: Translate the following passage into Chinese. Write your translation on the ANSWER SHEET.Engineers are developing a new type of Internet connection that could carry so much data so quickly it might surprise even Net surfers. This technology would open up a route through which data can be sent at speeds thousands of times faster than what’s possible now. If all goes to plan, the vast data speeds may soon be available to all. That might help solve the problem of how to handle the enormous growth in Internet traffic. The technology would require some。

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电子科学与技术试卷 第 5 页 共 14 页
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课程Ⅱ 半导体物理
(满分 35 分) 一、填空题(每空 1 分,共 10 分) 1.在半导体中,电子遵循费米–狄拉克统计分布规律。在与费米能级相等的能级上,被电子 占据的几率是 规律了。 2.硅的导带底和价带顶不在 k 空间的相同点,这种能带结构类型的半导体称为 ① 导体;因而,当电子由价带顶激发到导带底时准动量将 ② (填是否变化)。 3.中性杂质接受价带电子,从而为价带提供空穴并使本身成为负离子的杂质称为 ① 杂质;在制做开关器件时,在硅中掺金则因为它是有效的 ② 。 4.σ n 和 σ p 分别为半导体中复合中心对电子和空穴的俘获截面。作为一个有效的复合中心, 通常要求 ① ,对于电子陷阱,要求 ② 。(填 σ n 和 σ p 的相对大小) ① 电流; 半 ① ;当 E − EF >> KT 时,则可近似看成为遵循 ② 分 布
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绝密★启用前
2008 年同等学力人员申请硕士学位 学科综合水平全国统一考试
电子科学与技术试卷
第一部分 必答题 数值分析 第二部分 选答题(以下课程任选两门) Ⅰ.电磁场与波 Ⅱ.半导体物理 Ⅲ. 激光物理与技术 Ⅳ. 现代电路技术 Ⅴ. 信号处理
的近似求积公式有 3 次代数精确度,求 x0 ,x1 和 A0 + A1 的值(结果用 6 位小数数字表示). 电子科学与技术试卷 第 2 页 共 14 页
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四、计算题(7 分) 求室温(300K)时,下列情况下半导体 材料的电导率: (1)本征硅;(2 分) (2)掺磷浓度 N D = 1017 cm −3 的硅;(2 分) (3)同时掺有磷浓度 N D = 1017 cm −3 和硼浓度 N A = 1017 cm −3 的硅。(3 分) (已知:300K 时,本征载流子浓度 ni = 1.5 × 1010 cm −3 ;电子电荷 q = 1.6 × 10−19 C ; 载 流子迁移率:本征时, µ n = 1350cm 2 / V ⋅ s , µp = 500cm 2 / V ⋅ s ;杂质浓度为 1017 cm −3 时 , µn = 800cm 2 / V ⋅ s , µ p = 300cm 2 / V ⋅ s ; 杂 质 浓 度 为 2 × 1017 cm −3 时 ,
2
4.下列哪种情况对 MOS 结构的平带电压没有影响? A.可动电荷集中在金属与SiO 2 层界面处 B.可 动电荷集中在硅与SiO 2 层界面处 C.可动电荷集 中分布在SiO 2 层中间处 D.可动电荷均匀分布在 SiO 2 层中 电子科学与技术试卷 第 6 页 共 14 页
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三、简答题(每小题 4 分,共 12 分) 1.何谓“饱和漂移速度”?并简要说明原因。 2.请写出爱因斯坦关系式,并说明载流子的扩散系数和迁移率为什么会存在着内在的联 系关系? 3.简要说明金属—半导体接触的肖特基结与一般 pn 结在电学特性上的异同。
5.对硅pn结,pn结电流除少子扩散电流外,正偏时还要考虑势垒区中的 反偏时还要考虑势垒区中的 ② 电流。 二、选择题(每小题 1.5 分,共 6 分)
1.原胞是晶体体积最小的重复单元。对硅晶体,一个原胞中含有的原子数是: A.1 个硅原子 C.4 个硅原子 空穴。此空穴的准动量和能量为: A. ℏk , − E C. ℏk , E B. − ℏk , − E D. −ℏk , E B.2 个硅原子 D.8 个硅原子
µn = 600cm −3 / V ⋅ s , µp = 250cm −3 / V ⋅ s 。)
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三、计算题(每小题 3 分,共 6 分) 1.一个点电荷 q 置于一个半径为 R 的均匀介质球的球心(介质球的参数为 ε , µ0 ,且 ε 为 常数),球外是空气,求系统的位函数 Φ 。 2.三个点电荷 q1 , q2 , q3 在真空中分别置于点(1,0,0),(-1,0,0)和(0,0,1)处; 求该点电荷系统储存的静电场能。
4.同一横模,当菲涅耳数N越小时,衍射损耗越 阶次越高,衍射损耗越 ② 。
5.某处高斯光束的q参数为ia,则该处的高斯光束的等相位面为 6.圆形镜稳腔基模光斑形状是 ①

。 ② 形;
形;方形镜稳腔基模光斑形状是 ③ 形。 ①
三球面镜构成的环形腔的基模光斑是
7.自然加宽是由于原子(分子、离子)的有限 自然加宽宽度( ∆ν N )为 ② 。 ①
电子科学与技术试卷 第 3 页
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第二部分
选答题
课程Ⅰ 电磁场与波
(满分 35 分) 一、填空题(每空 1 分,共 14 分) 1.自由空间中积分形式法拉第电磁感应定律为: 路定律为: ② 。 ① ;此式 ① ;积分形式修正的安培环
课程Ⅲ 激光物理与技术
(满分 35 分) 一、填空题(每空 1 分,共 20 分) 1.激光的发散角和 ① 模有关, ① ② 模具有最小的远场发散角。 关系。
2.激光的相干时间和激光的线宽成
3.氦氖激光器的多普勒加宽宽度为 1500MHz ,要获得单纵模输出,则腔长应小于 ① 厘米。 ① 。相同菲涅耳数时,横模的
2.一个以速度 υ 运动的点电荷 q 在自由空间的电磁场中受到的力为 称为 ② 公式。
3.一个可导的标量场 f 对应于位移 ds 的方向导数为 向上的导数与该标量场梯度之间的关系为: 4.一个标量场的梯度构成一个 量场的散度构成一个 ② ① ②

① 。
;该标量场 f 在 ds 方

(请选择“标量场”或“矢量场”);一个矢
造成的。当下能级不是基态时,
8.在均匀加宽介质中,饱和光强与频率 频率 ②
;在非均匀加宽介质中,饱和光强与
。(填“有关”或“无关”) ① 的;阈值增益是 ② 。(填“相
9.不同纵模的阈值反转粒子数密度是 同”或“不同”)
10.由于模竞争,均匀加宽气体激光器的输出模式应为
① .拉格朗日插值余项表示式为 R ( x) = ② .
⎧ dy ⎪ = f ( x, y ), ( x0 ≤ x < b) 的数值方法 4.解常微分方程初值问题 ⎨ dx ⎪ = y ( x ) y ⎩ 0 0
yn + 2 =
是 ①
4 1 2 yn +1 − yn + hf ( xn + 2 , y n + 2) 3 3 3
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第一部分 必答题
数值分析
(满分 30 分) 一、填空题(每空 1 分,共 8 分) ⎡2 1 −2 1 ⎤ 1.已知矩阵 A b = ⎢ 4 0 −1 3⎥ ,用列主元素消去法解方程组 Ax = b ,第一步首先作 ⎢ ⎥ ⎢⎣ 0 3 2 5⎥⎦ 行变换把 ⎡⎣ A b ⎤⎦ 变换到 ⎡ A(1) b(1) ⎤ = ⎣ ⎦ 2.若 a > 0, x0 > 0 , 迭 代 公 式 xk +1 ① ,其收敛阶为 ① ,其中 A(1) = PA , P = ② .
考生须知
1. 本试卷满分为 100 分,包含必答题和选答题两部分。数值分析满分 30 分,每位考生必 答;选答题满分 70 分,包括电磁场与波、半导体物理、激光物理与技术、现代电路技 术和信号处理五门课程,每门课程满分 35 分,考生从中任选 2 门作答,多选者只按前 2. 3. 4. 5. 选 2 门计分。 请考生务必将本人准考证号最后两位数字填写在本页右上角方框内。 考生一律用蓝色或黑色墨水笔在答题纸指定位置上按规定要求作答,未做在指定位置上 的答案一律无效。 答填空题时,务必在答题纸上标明每题每空的标号;答选择题时,请写明题号和所选英 文字母。 监考员收卷时,考生须配合监考员验收,并请监考员在准考证上签字(作为考生交卷的 凭据)。否则,若发生答卷遗失,责任由考生自负。 电子科学与技术试卷 第 1 页 共 14 页
2.价带顶附近有一波矢为 k 、能量为 − E 的电子被激发到导带,相应在价带中产生一个
3.在平衡 pn 结的势垒区中,电子和空穴浓度的乘积 n ( x ) p ( x ) 为: A. n ( x ) p ( x ) = 0 C. n ( x ) p ( x ) <0 B. n ( x ) p ( x ) >0 D. n ( x ) p ( x ) = n i
ax 2 k +1 (k = 0, 1, 2, ⋯) 产 生 的 序 列 {xk } 收 敛 到 = 2axk
② .
3.设 f ∈ C 3 [0, 1], f (1) = f ′(1) = 0, f (0.5) = 1. 满足条件
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