2010年电子科技大学826生理学考研试题答案
电子科技大学2010年考研复试分数线
专业
政治理论
外国语
业务课（一）
业务课（二）
总分
006
计算机科学与工程学院
080902
电路与系统
40
35
60
60
300
006
计算机科学与工程学院
081021
★信息安全
40
35
60
60
300
006
计算机科学与工程学院
081101
控制理论与控制工程
40
35
60
60
300
006
计算机科学与工程学院
081201
011
经济与管理学院
120204
技术经济及管理
50
40
70
70
315
011
经济与管理学院
430137
工业工程
40
35
60
60
280
011
经济与管理学院
430140
项目管理
40
35
60
60
280
011
经济与管理学院
430141
物流工程
40
35
60
60
280
011
经济与管理学院
460100
工商管理硕士
0
通信与信息工程学院
430109
电子与通信工程
40
35
60
60
290
002
电子工程学院
080902
电路与系统
40
35
60
60
315
002
电子工程学院
080904
电磁场与微波技术
中科院生理学硕士生入学试题汇编及答案
中科院生理学硕士生入学试题汇编(1981-1996)一. 名词解释第一章1.高等动物机体的内环境内环境即细胞外液，是细胞在体内直接所处的环境。
2.前馈前馈指干扰信号在作用于受控部分引起输出变量改变的同时，可直接通过感受装置作用于控制部分，使其输出变量尚未出现偏差引起反馈调节前，就能及时纠正受控部分的活动，这种干扰信号对控制部分的直接作用称为前馈。
第二章1.液态镶嵌模型膜以液态的脂质双分子层为基架，其间镶嵌着许多具有不同结构和功能的蛋白质。
2.细胞膜的易化扩散不溶于脂质或脂溶性小的物质，在某些膜蛋白的协助下，由膜高浓度的一侧向低浓度的一侧的转运，是一个被动过程。
包括经载体异化扩散和经通道异化扩散。
3.细胞膜的主动转运由膜蛋白介导，依靠细胞本身的耗能过程，逆浓度或电位差的跨膜转运。
分为原发性主动转运和继发性主动转运。
4.钠-钾泵简称钠泵，也称Na+-K+-A TP酶，具有A TP酶的活性。
钠泵主要作用为“出钠入钾”：当细胞内Na+或细胞外K+的浓度升高时，激活钠泵，每分解1分子A TP可泵出3分子Na+，移出2个K+，是一种生电泵。
5.阈电位能使膜通道突然大量开放，引起膜去极化和Na+通道开放之间形成再生性循环（正反馈），从而产生兴奋地临界膜电位。
一般比静息电位小10-20mV，是兴奋产生的触发电位（又称燃点）。
6.电压依从性通道受膜电位调控，电压门控通道分子内具有带点的电位感受区，通常在膜去极化时发生移动，引起分子构象变化和闸门开放。
电压门控通道的开闭还涉及细胞的电活动。
7.跳跃传导神经纤维膜外轴突有髓鞘包裹，仅在郎飞结处裸露，局部电流只能在郎飞结间发生，表现为兴奋在一个个郎飞结间跳跃式传导。
传导速度更快，更节能。
8.电压钳技术电压钳技术采用一个反馈电路，能使膜电位Em被钳制（固定）于任一水平，因而能保证在测量膜电流期间的电化学驱动力不变。
9.缝隙连接一种特殊的细胞间连接方式，使兴奋得以在细胞间直接传播。
电子科技大学2010年管理学原理考研真题及答案
电子科技大学2010年管理学考研真题一、判断题（1*20）1、一些文献对管理定义阐述不同，有活动论、过程论、职能论、工作论和环境论。
其中1978年诺贝尔经济学奖获得者西蒙认为：“管理就是决策”，以及哈佛大学教授德鲁克认为“管理是一种以绩效责任为基础的专业职能”。
这两种解释都属于活动论。
2、各项管理职能都有自己独特的管理形式。
例如计划职能通过目标的制定和行动的确定表现出来。
组织职能通过组织设计和人员配备表现出来。
但创新职能本身并没有某种独特的表现形式。
3、人群关系理论是“行为科学”管理学派的早期思想，它只强调重视人的行为，而行为科学还要求进一步研究人的行为规律，找出产生不同行为的影响因素，探讨如何控制人的行为以达到预定目标。
4、马斯洛的需要层次理论，虽然在发表为不少人接受，但在实际工作中得到应用，但对它层次排列是否符合客观实际也有不少争议，有人认为它对人的动机没有完整的看法，没有提出激励方法等。
这一理论注意到了工作于工作环境的关系。
5、从伦理的角度看，具有内在控制中心的人不大可能对其行为后果负责，更可能依赖外部力量。
相反，具有外在控制力量的人则更可能对后果负责并依赖自己内在的是非标准来指导其行为。
6、“IBM就是服务”是美国国际商业机器公司的价值观。
“顾客第一”是日本三菱公司的组织精神。
7、强烈管理欲望是有效进行管理工作的基本前提。
正直和诚实是每个组织成员都应该具备的基本品质。
8、计划是决策的前提，决策是计划的逻辑延续，计划为决策提供依据，决策为计划的目标实现提供保证。
9、据有关权威部门调查统计分析，家电行业某类家用加湿取暖器在近六年的市场年销售量依次是1000万、2000万、3500万、5500万、5800万、5850万台。
由此可以推断该类家用加湿取暖器正处于其产品生命周期的成长期。
10、如果高层次对低层次的决策没有任何控制，则分权程度高：如果低层次在决策后要向高一级管理部门报告备案，则分权程度次之：如果低层次在决策前要征询上级部门的意见，则分权程度更低。
电子科技大学考研829 数字 模拟电子本科试卷考研真题
电子科技大学模拟电路期末（2000-2011）试卷14份+答案每份不同电子科技大学模电子科技大学模拟电路期末（2000-2011）试卷14份+答案每份不同电子科技大学模拟电路期中（2004-2011）试卷12份+答案每份不同电子科技大学数字逻辑电路本科试卷（2002年以后）17套（每份不同）829数字电路与模拟电路2000-2010真题与答案电子科大模拟电路简答题试题库（100道左右）电子科技大学考研模拟电路2007-2010 四份电子科技大学模拟电路吴援明课后习题答案电子科技大学模拟电路PPT 3份电子科技大学数字逻辑电路PPT 2份数字逻辑电路课后答案拟电路期中（2004-2011）试卷12份+答案每份不同电子科技大学数字逻辑电路本科试卷（2002年以后）17套（每份不同）829数字电路与模拟电路2000-2010真题与答案电子科大模拟电路简答题试题库（100道左右）电子科技大学考研模拟电路2007-2010 四份电子科技大学模拟电路吴援明课后习题答案电子科技大学模拟电路PPT 3份电子科技大学数字逻辑电路PPT 2份数字逻辑电路课后答案所有资料不重复。
淘宝网：/item.htm?id=9960243831电子科技大学二零零五至二零零六学年第二学期期中考试“数字逻辑设计及应用”课程考试题期中卷（120分钟）考试形式：闭卷考试日期2006年4月22日课程成绩构成：平时20 分，期中20 分，实验0 分，期末60 分一二三四五六七八九十合计一、填空题（每空1分，共15分）1、( 323 )10=( 101000011 ) 22、(0. 4375 )10=( 0.0111 ) 23、(1101．0011) 2 = ( 13.1875 )104、（FD．A）16 = ( 11110000.1010 ) 2= ( 360.50 )85、( 4531 )10 = ( 0100 0101 0011 0001 ) 8421BCD 。
电子科技大学数字电路真题2010年_真题-无答案
电子科技大学《数字电路》真题2010年(总分140,考试时间90分钟)一、选择题1. 两个二进制数进行算术运算，下面______说法是不正确的。
A.两个无符号数相加，如果最高位产生进位输出，则肯定发生溢出 B.两个最高位不同的补码进行相加运算，肯定不会产生溢出 C.两个补码进行相加运算，如果最高位产生进位输出，则肯定发生溢出 D.两个补码的减法运算可以用加法器来实现2. 以下描述一个逻辑函数的方法中______只能唯一表示。
A.表达式 B.逻辑图 C.真值表 D.波形图3. 在不影响逻辑功能的情况下，CMOS与非门的多余输入端可______。
A.接高电平 B.接低电平 C.悬空 D.通过电阻接地4. 欲产生序列信号11010111，则至少需要______级触发器。
A.2 B.3 C.4 D.55. 一个8位二进制减法计数器，初始状态为00000000，问经过268个输入脉冲后，此计数器的状态为______。
A.11001111 B.11110100 C.11110010 D.111100116. 为构成4096×16的RAM区，共需1024×4位的RAM芯片______片。
A.64 B.8 C.16 D.327. 逻辑函数F1=∑A，B，C，D(2，3，5，8，11，13)和F2=∏A，B，C，D(2，4，7，10，12，13)之间满足______关系。
A.对偶 B.相等 C.香农展开 D.反演8. 移位寄存器由8级触发器组成，用它构成的扭环形计数器具有______种有效状态；用它构成的环形计数器具有______种有效状态，构成线性反馈移位寄存器具有______种有效状态。
A.16，8，511 B.4，8，15 C.16，8，255 D.8，16，1279. 若要将一异或非门当做反相器(非门)使用，则输入端A、B端的连接方式是______。
A.A 或B中有一个接“1” B.A或B中有一个接“0” C.A和B并联使用 D.不能实现10. 实现同一功能的Mealy型同步时序电路比Moore型同步时序电路所需要的______。
电子科技大学数字电路2010期末考试题和答案
电子科技大学二零零九至二零一零学年第 二 学期期 末 考试数字逻辑设计及应用 课程考试题 A 卷（120分钟）考试形式：闭卷 考试日期2010年7月12日课程成绩构成：平时 20 分， 期中 20 分， 实验 0 分， 期末 60 分一、To fill your answers in the blanks （1’×25）1. If [X]10= - 110, then [X]two's-complement =[ 10010010 ]2,[X]one's-complement =[ 10010001 ]2. (Assumed the number system is 8-bit long) 2. Performing the following number system conversions: A. [10101100]2=[ 000111010010 ]2421B. [1625]10=[]excess-3C. [ 1010011 ]GRAY =[10011000 ]8421BCD3. If ∑=C B A F ,,)6,3,2,1(, then F D ∑=C B A ,,( 1，4，5，6 )=C B A ,,∏(0，2，3，7 ).4. If the parameters of 74LS-series are defined as follows: V OL max = 0.5 V , V OH min = 2.7 V , V IL max = 0.8 V , V IH min = 2.0 V , then the low-state DC noise margin is ,the high-state DC noise margin is .5. Assigning 0 to Low and 1 to High is called positive logic. A CMOS XOR gate in positive logic is called XNOR gate in negative logic.6. A sequential circuit whose output depends on the state alone is called a Moore machine.7. To design a "001010" serial sequence generator by shift registers, the shift register should need 4 bit as least.8. If we use the simplest state assignment method for 130 sates, then we need at least 8 state variables.9. One state transition equation is Q*=JQ'+K'Q. If we use D flip-flop to complete the equation, theD input terminal of D flip-flop should be have the function D= JQ'+K'Q.10.Which state in Fig. 1 is ambiguous D11.A CMOS circuit is shown as Fig. 2, its logic function z= A’B’+ABFig. 1 Fig. 212.If number [A]two's-complement =01101010 and [B]one's-complement =1001, calculate [A-B]two's-complement and indicate whether or not overflow occurs.(Assumed the number system is 8-bit long)[A-B]two's-complement = 01110000, overflow no13. If a RAM’s capacity is 16K words × 8 bits, the address inputs should be 14bits; We need 8chips of 8K ⨯8 bits RAM to form a 16 K ⨯ 32 bits ROM..14. Which is the XOR gate of the following circuit A .15.There are 2n－n invalid states in an n-bit ring counter state diagram.16.An unused CMOS NOR input should be tied to logic Low level or 0 .17.The function of a DAC is translating the Digital inputs to the same value of analogoutputs.二、Complete the following truth table of taking a vote by A,B,C, when more than two of A,B,C approve a resolution, the resolution is passed; at the same time, the resolution can’t go through if A don’t agree.For A,B,C, assume 1 is indicated approval, 0 is indicated opposition. For the F,A B C F0 0 0 0三、The circuit to the below realizes a combinational function F of four variables. Fill in the Karnaugh map of the logic function F realized by the multiplexer-based circuit. (6’)四、(A) Minimize the logic function expressionF = A·B + AC’ +B’·C+BC’+B’D+BD’+ADE(H+G) （5’）F = A·B + AC’ +B’·C+BC’+B’D+BD’= A·(B ’C )’ +B’·C+BC’+B’D+BD’= A +B’·C+BC’+B’D+BD’+C ’D (或= A +B’·C+BC’+B’D+BD’+CD ’)= A +B’·C+BD’+C ’D (或= A + BC’+B’D +CD ’)(B) To find the minimum sum of product for F and use NAND-NAND gates to realize it （6’）=),,,(Z Y X W F Π(1,3,4,6,9,11,12,14)------3分 F= X ’Z ’+XZ -----2分 =( X ’Z ’+XZ)’’=(( X ’Z ’)’(XZ)’)’ ------1分五、Realize the logic function using one chip of 74LS139 and two NAND gates.（8’）∑=)6,2(),,(C B A F ∑=)3,2,0(),,(E D C GF(A,B,C)=C’∑(1,3) ---- 3分 G(C,D,E)=C’∑(0,2,3) ----3分六、Design a self-correcting modulo-6 counter with D flip-flops. Write out the excitation equations and output equation. Q2Q1Q0 denote the present states, Q2*Q1*Q0* denote the next states, Z denote the output. The state transition/output table is as following.（10’）Q2Q1Q0Q2*Q1*Q0*Z000 100 0100 110 0110 111 0111 011 0011 001 0001 000 1激励方程式：D2=Q0’D1=Q2D0=Q1修改自启动：D2=Q0 +Q2Q1’D1=Q2+Q1Q0’D0=Q1+Q2Q0输出方程式：Z=Q1’Q0得分七、Construct a minimal state/output table for a moore sequential machine, that will detect the input sequences: x=101. If x=101 is detected, then Z=1.The input sequences DO NOT overlap one another. The states are denoted with S0~S3.（10’）For example:X：0 1 0 1 0 0 1 0 1 0 1 1 0 1 1 0 0 0 1 1 ……Z：0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 ……state/output tableS X Z 0 1 S0 S0 S1 0 S1 S2 S1 0 S2 S0 S3 0 S3 S0S11 S*八、Please write out the state/output table and the transition/output table and the excitation/output table of this state machine.（states Q2 Q1=00~11, use the state name A~D ）（10’）Transition/output table State/output table Excitation/output tableQ2Q1 X Z 01 00 01 11 1 01 00 10 1 10 01 01 0 11 01 01 1Q2*Q1*SX Z 0 1 A B D 1 B A C 1 CB B 0 DBB1S*Q2Q1 X Z 01 00 01 11 1 01 00 10 1 10 01 01 0 11 01 01 1D2 D1得 分九、Clocked Synchronous State Machine Design（15’）74x163 is a synchronous 4-bit binary counter with synchronous CLEAR input and LOAD input. LD_L=(Q B Q C)', CLR_L=(Q D'Q B)'in the following circuit.1. Finish the logic circuit.2. Draw the state diagram with all states of “Q3Q2Q1Q0” . (“Q3Q2Q1Q0” is the output of 74x163)3. Write the sequence of Y.Y is the output of 74x151. (Assumed state of 74x163 start in Q3Q2Q1Q0=0000.)YCLOCK====Word 行业资料分享--可编辑版本--双击可删====解答：(1) Finish the logic circuit.（见下页图） LD_L=(Q B Q C )', CLR_L=(Q D 'Q B )' (2) Q3Q2Q1Q0: 清零优先级高于置数 0000—0001—0010—0000 0011—00000100—0101—0110—0000 0111—00001000—1001—1010—1011--1100—1101—1110--11001111—1100 (3) Y=010*******Function table for a 74x163Inputs Current State Next state OutputCLR_L LD_L ENT ENP Q D Q C Q B Q A Q D * Q C * Q B * Q A * RCO 0 X X X X X X X 0 0 0 0 0 1 0 X X X X X X D C B A 0 1 1 0 X X X X X Q D Q C Q B Q A 0 1 1 X 0 X X X X Q D Q C Q B Q A 0 1 1 1 1 0 0 0 0 0 0 0 1 0 1 1 1 1 0 0 0 1 0 0 1 0 0 1 1 1 1 0 0 1 0 0 0 1 1 0 1 1 1 1 0 0 1 1 0 1 0 0 0 1 1 1 1 …………. ………….. 0 1 1 1 1 1 1 1 1 0 0 0 0 1====Word行业资料分享--可编辑版本--双击可删====。
电子科技大学研究生历年学位英语考试试题及答案汇编(9)分析解析
2002年6月研究生英语学位课统考真题：Part II. Vocabulary ( 10 minutes, 10 points ) Section A (0.5 point each)16. Many women prefer to use cosmetics to enhance their beauty and make them look younger.A revealB underlineC improveD integrate17. What players and coaches fear most is the partiality on the part of referees in a game.A justiceB biasC participationD regionalism18. The sale has been on for a long time because the price is reckoned to be too high.A consideredB stipulatedC raisedD stimulated19. Smugglers try every means to lay hands on unearthed relics for their personal gains.A set foot onB lost their heart toC set their mind onD get hold of20. There must have been round about a thousand people participating in the forum.A approximatelyB exactlyC less thanD more than21. These old and shabby houses will be demolished for the construction of residential buildings.A pulled outB pulled inC pulled downD pulled up22. Readers are required to comply with the rules of the library and mind their manners.A observeB memorizeC commentD request23. Artificial intelligence deals partly with the analogy between the computer and the human brain.A likenessB relationC contradictionD difference24. It is often the case that some superficially unrelated events turn out to be linked in some aspects.A practicallyB wonderfullyC beneficiallyD seemingly25. The alleged all-power master of chi kong was arrested on a charge of fraud.A so-calledB well-knownC esteemedD undoubted26. It is hoped that pork can be made leaner by introducing a cow gene into the pig’s genetic ____A reservoirB warehouseC poolD storehouse27. The chairman said that he was prepared to ____the younger people in the decision making.A put up withB make way forC shed light onD take charge of28. Tom is angry at Linda because she ____ him ____ all the time.A sets..upB puts…downC runs…outD drops…in29. The ability to focus attention on important things is a _____characteristic of intelligence.A definingB decliningC defeatingD deceiving30. Our picnic having been ____ by the thunderstorm, we had to wait in the pavilion until it cleared up.A destroyedB underminedC spoiltD contaminated31. I was disappointed to see that those people I had sort of ____ were pretty ordinary.A despisedB resentedC worshippedD ridiculed.32. One of the main purposes of using slang is to consolidate one’s ____ with a group.A specificationB unificationC notificationD identification33. The ____ from underdeveloped countries may well increase in response to the soaring demand for high-tech professionals in developed nations.A brain damageB brain trustC brain feverD brain drain34. This matter settled, we decided to ___ to the next item on the agenda.A succeedB exceedC proceedD precede35. Listening is as important as talking. If you are a good listener, people often ___you for being a good conversationalist.A complementB complimentC compelD complainPart III. Cloze Test (10 minutes, 15 points, 1 point each)Most American magazines and newspapers reserve 60 percent of their pages for ads. The New York Times Sunday edition 36 may contain 350 pages of advertisements. Some radio stationsdevote 40 minutes of every hour to 37 .Then there is television. According to one estimate, American youngsters sit 38 three hours of television commercials each week. By the time they graduate from high school, they will have been 39 360,000 TV ads. Televisions advertise in airport, hospital waiting rooms, and schools.Major sporting 40 are now major advertising events. Racing cars serve as high-speed 41 . some athletes receive most of their money from advertisers. One 42 basketball player earned $ 3.9 million by playing ball. Advertisers paid him nine times that much to 43 their products. There is no escape. Commercial ads are displayed on walls, buses and trucks. They decorate the inside of taxis and subways ----even the doors of public toilets. 44 messages call to us in supermarkets, stores, elevators -----and 45 we are on hold on the telephone. In some countries so much advertising comes through the mail that many recipients proceed directly from the mailbox to the nearest wastebasket to 46 the junk mail. 47 Insider’s Report, published by McCann-Erickson, a global advertising agency, the estimated 48 of money spent on advertising worldwide in 1990 was $ 275.5 billion. Since then, the figures have 49 to $ 411.6 billion for 1997 and a projected $ 434.4 billion for 1998. Big money.What is the effect of all of this ? One analyst 50 it this way: “Advertising is one of the most powerful socializing forces in the culture. Ads sell more than products. They sell images, values, goals , concepts of who we are and who we should be. They shape our attitudes and our attitudes shape our behaviour.36. A lonely B alone C singly D individually37. A commerce B consumers C commercials D commodities38. A through B up C in D about39. A taken to B spent in C expected of D exposed to40. A incidents B affairs C events D programs41. A flashes B billboards C attractions D messages .42. A top-heavy B top-talented C top-secret D top-ranking43. A improve B promote C urge D update44. A Audio B Studio C Oral D Video45. A since B while C even D if46. A toss out B lay down C blow out D break down47. A It is said that B Apart from C According to D Including in48. A digit B amount C account D budget49. A raised B elevated C roared D soared50. A said B recorded C told D putPassage One For decades, arms-control talks centered on nuclear weapons. This is hardly surprising, since a single nuclear bomb can destroy an entire city. Yet, unlike smaller arms, these immensely powerful weapons have not been used in war in over 50 years.Historian John Keegan writes, “Nuclear weapons have, since August 9, 1945, killed no one. The 50,000,000 who have died in war since that date have for the most part, been killed by cheap, mass-produced weapons and small ammunitions, costing little more than the transistor radios which have flooded the world in the same period. Because small weapons have disrupted life very little in the advanced world, outside the restricted localities where drug-dealing and political terrorism flourish, the populations of the rich states have been slow to recognize the horror that this pollution has brought in its train.”Why have small arms become the weapons of choice in recent wars? Part of the reason lies in the relationship between conflict and poverty. Most of the wars fought during the 1990s took place in countries that are poor----too poor to buy sophisticated weapon systems. Small arms and light weapons are a bargain.For example, 50 million dollars, which is approximately the cost of a singlemodern jet fighter, can equip an army with 200,000 assault rifles.Another reason why small weapons are so popular is that they are lethal. A single rapid-fire assault rifle can fire hundreds of rounds a minute. They are also easy to use and maintain. A child of ten can be taught to strip and reassemble a typical assault rifle. A child can also quickly learn to aim and fire that rifle into a crowd of people.The global traffic in guns is complex. The illegal trade of small arms is big. In some African wars, paramilitary groups have bought billions o f dollars’ worth of small arms and light weapons, not with money, but with diamonds seized from diamond-mining areas.Weapons are also linked to the illegal trade in drugs. It is not unusual for criminal organizations to use the same routes to smuggle drugs in one direction and to smuggle guns in the other.51. It is implied in the passage that __________A small arms-control is more important than nuclear arms-control.B the nuclear arms-control talks can never reach an agreement.C the power of nuclear weapons to kill people has been diminished.D nuclear weapons were the topic of arms-control talks 50 years ago.52. The advanced world neglect the problems of small arms because ____A They have to deal with drug-dealing and political terrorism.B They have no such problems as are caused by small weapons.C They have not recognized the seriousness of the problems in time.D They face other more important problems such as pollution.53. Which of the following is NOT mentioned as the reason for the prevalence of small arms?A Small arms are cheap.B Small arms are powerful .C Small arms are easier to use.D Small arms are easier to get54. We can conclude from the passage that ____A small arms are not expensive in the black-market.B it is unfair to exchange small arms for diamond.C Criminals use the same passage to smuggle drugs and small arms.D where there are drugs, there are small arms.55. The best title for this passage is ____A Small Arms Talks, Not Nuclear Arms Talks.B Neglect of Small Arms ControlC Global Traffic in Small ArmsD Small Arms, Big Problems.Passage Two In order to combat sickness, many doctors rely heavily on prescribing medicines that are developed and aggressively advertised by pharmaceutical companies. Significantly, the world market for such drugs has skyrocketed in recent decades, from just a few billion dollars a year to hundreds of billions of dollars annually. What had been a consequence?Medically prescribed drugs have helped many people. Yet, the health of some who take drugs has either remained unchanged or become worse. So, recently some have turned to using other methods of medical treatment.In places where modern, conventional medicine has been the standard of care, many are now turning to what have been called alternative, or complementary, therapies. “The Berlin Wall that has long divided alternative therapies from mainstream medicine appears to be crumbling,” said Consumer Reports of May 2000.The Journal of the American Medical Association(JAMA) observed, “Alternative medical therapies such as the use of herbs, functionally defined as interventions neither taught widely in medical schools nor generally available in U. S. hospitals, have attracted increased national at tention from the media, the medical community, governmental agencies, and the public.”In the past, conventional medical practitioners have been skeptical about alternative medical practices, but 75 medical schools in the United States currently offer elective course work on alternative medicine, including Harvard, Stanford, University of Arizona, and Yale.JAMA noted, “ Now an estimated 3 in 5 individual seeing a medical doctor for a principal condition also used an alternative therapy.And outside the United States, alternative medicine is popular throughout the industrialized world.”The trend toward integrating alternative therapies with conventional ones has long been a general practice in many countries. As JAMA concluded, “There are no longer t wo types of medicine, conventional and complementary. There is only good medicine and bad medicine.”56. This passage suggests that pharmaceutical companies ____A pay doctors for prescribing their drugs.B have raised the prices of their products sharply in recent years.C spend more money on their advertisements than on their products.D have produced some ineffective drugs.57. The sentence “The Berlin Wall …. Appears to be crumbling” in the third paragraph implies that _____A the restrictions on the practice of alternative therapies will be abolished.B there are still strict restrictions on the practice of alternative drugs.C conventional medicine and alternative therapies are incomparable.D conventional medicine and alternative therapies are completely different remedies.58. According to the passage, alternative therapies _____A are widely taught in the U.S. medical schools now.B have been approved by U. S. government.C have been used by many American patients.D are as popular as conventional medicine.59. JAMA seems to suggest that ____________A U. S. government should meet the increasing demands for alternative therapies.B a medicine is good after it proves to be beneficial to the patients.C pharmaceutical companies should cover the cost of alternative therapies.D conventional medicine and alternative medicine should join hands.60. It is implied in the passage that ._____________A we should take as little western medicine as possible.B the prices of the prescribed medicine should be reduced.C herbal medicine will be accepted by more Americans.D without the help of alternative medicine, good health can not be guaranteed.Passage Three Our Milky Way galaxy could contain up to 1 billion Earth-like planets capable of supporting life, scientists announced last week.The theoretical abundance of habitable worlds among the estimated 200 billion stars of our home galaxy suggests that more powerful telescopes might glimpse the faint signature of far-off planet, proving that, in size and temperature at least, we are not alone in the universe.Solar systems such as Earth’s, in which planets orbit a star, have been discovered. Astronomers have identified almost 100 planets in orbit around other suns. All are enormous, and of the same gaseous make-up as Jupiter.Barrie Jones of the Open University in UK and his colleague Nick Sleep have worked out how to predict which of the newly discovered solar systems is likely to harbor Earth-like planets.Using a computer, they have created mathematical models of planetary systems and seeded them with hypothetical Earths in “Goldilocks zone” orbits, where it is neither too hot too cold to support life.The computer simulates which of these model Earths is likely to be kicked out of its temperature orbit by gravitational effects of the monster planets, and which is likely to survive.The solar system most like ours discovered so far is 51 light years away, at the star 47 Ursae Majoris, near the group of stars known as the Great Bear.Astronomers have discovered two planets orbiting 47 Ursae Majoris----One is two and half times the size of Jupiter, the other slightly smaller. Both planets are relatively close to the Goldilocks zone, which is further out than ours because 47 Ursae Majoris is older, hotter and brighter than the sun. “It’s certainly a system worth exploring for an Earth-like planet and for life,” said Jones. The requirement for a life-supporting zone in any solar system is that water should be able to exist in a liquid state.NASA and its European counterpart, ESA, plan to launch instruments in the next 10 years which could produce pictures of Earth-sized planets.61. It is suggested in this passage that _______________A scientists have found evidence to prove there are many Earth-like planets in our galaxy.B Theoretically there are a great number of Earth-like planets capable of supporting life.C our Earth is the only planet in our galaxy that can support life.D with more powerful telescope, scientists will be able to find more galaxies in the universe62. The “Godilocks zone” mentioned in the 5th paragraph most probably means _________A a certain fixed distance between a planet and sun.B a range in the universe in which th e planets’ temperature is suitable for life.C a range in the universe in which the planets can receive enough sunlight.D a mathematical model to measure the size of the planetary system.63. Barrie Jones and Nick Sleep have found ____________A 100 planets orbiting around other stars like our sun.B many planets’ atmosphere has the same composition as Jupiter.C the ways to tell which solar system may have Earth-like planets.D a mathematical model to measure the distance of newly found solar-systems.64. So far, the solar system most like ours that has been discovered is _______A in the group of stars known as Great Bear.B 2.5 times as big as Jupiter.C smaller than our system.D impossible for us to reach at present time.65. The most important requirement to have a life-supporting zone in any solar system is that it must have _____A enough water and proper temperature.B enough oxygen and hydrogen.C enough air and sunlight.D enough water in any state.Passage Four Having abandoned his call for higher gasoline prices, Vie President Al Gore has another idea to get people out of their cars: Spend billions on mass transit ----$ 25 billion to be exact. Last week, Gore unveiled his “Keep America Moving” initiative, which will spend $25 billion on upgrading and improving mass-transit systems nationwide. According to Gore’s self-proclaimed “new way of thinking”, all that’s necessary to reduce traffic congestion is to “give people a choice.”The federal government has been tryin g to “give people a choice” for decades to little effect. Portions of the federal gasoline tax have already been used to support urban bus and rail systems. Despite years of subsidies, few urban-transit systems run in the black. They don’t do much to reduce congestion either. No matter how much the tax-payers paid for the planned transit systems.Americans prefer the autonomy offered by their automobiles.The vice president praised the Portland light-rail system as an example of how good mass transit can be. Yet Portland’s experience is more cautionary tale than exemplary model. Research by the Cascade Policy Institute demonstrates that Portland’s Metro has been a multi-million-dollar mistake. According to Metro’s own figures, the light-rail system is doing little to reduce congestion, as most of its riders used to ride the bus. Those riders that do come off the roads, come at an incredible price: $ 62 per round trip. Road improvements and expansion would do far more to reduce congestion at a fraction of t he cost, but they wouldn’t attract the same volume of federal funds.66. According to the author, the mass-transit systems____A are characterized by low consumption of gasoline.B have contributed little to the improvement of the traffic.C aim at monitoring the public traffic.D are financially profitable.67. What does the author say about the federal government?A It has recently begun to address the problem of traffic congestion.B It fails to provide enough funds to help reduce traffic congestion.C Its attempt to reduce traffic congestion is successful but costly.D It has not done much to reduce congestion by improving roads.68. What is said about Americans’ attitude toward the transit systems?A They are reluctant to pay taxes to support the transit systems.B They think driving their own cars is more convenient.C They prefer the policies of improving and expanding roads.D They think there should be more choices in transportation.69 In the third paragraph, the underlined expression “cautionary tale” most probably means ____A an incredible storyB an untrue storyC a story giving a warningD a story teaching a moral lesson70. Which of the following statements would the author probably agree to ?A In spite of federal funds, most urban-transit systems have financial problems.B The American public should become more aware of the need to reduce traffic congestion.C The attempt to expand roads would be as costly as the one to build a light-rail system.D The federal gasoline tax should be raised to support urban-transit system.Passage Five In all of the industrial countries and many less developed countries, a debate along the lines of government vs. business prevails. This struggle has gone on for so long and is so pervasive, that many who participate in it have come to think of these two social institutions as natural and permanent enemies, each striving to oppose the other.Viewing the struggle in that format diminishes the chance of attaining more harmonious relations between government and business. Moreover, if these two are seen as natural and deadly enemies, then business has no long-range future. It is self-evident that government, as the only social instrument that can legally enforce its will by physical control, must win any struggle that is reduced to naked power.A more realistic, and most constructive, approach to the conflict between business and government starts by noticing the many ways in which they are dependent on each other. Business cannot exist without social order. Business can and does generate its own order, its own regularities of procedure and behaviour; but at bottom these rest upon more fundamental patterns of order which can be maintained and evolved by the political state.The dependence of government on business is less absolute. Governments can absorb direct responsibility for organizing economic functions. In many cases, ancient and modern, government-run economic activities seem to have operated at a level of efficiency not markedlyinferior to comparable work organized by business. If society’s sole purpose is to achieve a bare survival for its members, there can be no substantial objection to governmental absorption of economic arrangements.71. Many people think go vernment and business are “enemies” because ____A the struggle between the two parties has always existed.B they based their belief on the experience of the industrial countries.C they believe that government can do better than business in economic activities.D the struggle between the two parties is so fierce that neither will survive in the end.72. The third paragraph mainly discusses___________A how government and business depend on each other.B why social order is important to business activities.C Why it is necessary for business to rely on government.D how business can develop and maintain order.73. What does the passage say about economic activities organized by government?A They mostly aim at helping people to survive.B They can be conducted as well as those by business.C They are the ones that business can’t do well.D They are comparatively modern phenomena.74. We can conclude from the passage that ____A it is difficult for government and business to have good relations.B it is difficult to study the relations between government and business.C government should dominate economic activities.D government and business should not oppose each other .Passage Six Standing up for what you believe in can be tough. Sometimes it’s got to be done, but the price can be high.Biochemist Jeffrey Wigand found this out the hard way when he took on his former employer, tobacco giant Brown & Williamson, over its claim that cigarettes were not addictive.So too did climate modeler Ben Santer when he put his name to a UN report which argued that it is people who are warming the planet. Both men found themselves under sustained attacks, Wigand from Brown & Williamson, Santer from the combined might of the oil and car industries.The two men got into their dreadful predicaments by totally different routes. But they had one thing in common---they fought powerful vested interests （既得利益者）with scientific data that those interests wished would go away.Commercial companies are not, of course, the only vested interests in town. Governments have a habit of backing the idea of whoever pays the most tax. Academia also has its version: scientific theories often come with fragile egos and reputations still attached, and supporters of those theories can be overly resistant to new ideas.For example, Alfred Wegener’s idea that the continents drift across the surface of the planet was laughed at when he proposed it in 1915. this idea was only accepted finally in the 1960s, when plate tectonics came of age. More recently, in 1982, Stanley Prusiner was labeled crazy for his controversial suggestion that infectious diseases such as BSE（疯牛病）were caused by a protein that self-replicated. A decade later, the notion had gained ground. Finally , in 1997, he received a Nobel Prize for his idea.Western science has always thrived on individualism---- one person’s ambition to topple a theory. So independence of thought is crucial.But this applies not only for scientists, but also their institutions.With governments and commercial sponsors increasingly pulling the strings of university research---- perhaps it’s time to spend some lottery money, say, on truly independent research.Overcoming scientists’ inertia will be much more dif ficult.Yet we can’t afford to be slow to hear new ideas and adapt to them. Back in the 1950s, if governments had taken seriously the findings of epidemiologist Richard Doll about the link between smoking and lung cancer, millions of people would have been spared disability and premature death.75. One of the ideas that are highlighted in the passage is that __________A individuals have greater chance of success in scientific research than collectives.B personality plays a crucial role in the advance of science.C originality of thinking is the key to the advance of science.D the intelligence of scientists is of vital importance to scientific achievements.76. Jeffrey Wigand’s idea about the nature of cigarette__________A was similar to that of the tobacco company.B sounded ridiculous to the general public .C was reached purely out of personal interestsD should be regarded as scientifically true.77. Jeffrey Wigand was attacked by the tobacco giant because _____A his idea could lead to a financial loss for the company.B he had been eager to defeat his company.C his idea was scientifically invalid.D he had long been an enemy of the company.78. The underlined phrase “place tectonics” in the 5th paragraph probably refers to ____A the study of the structure of the earthB scientific study of the climate of the earth.C the theory that the earth’s surface consists of plates in constant motion.D the theory that the earth’s surface was originally a plate-shaped heavenly body.79. One of the conclusions that we can reach from this passage is that ____A governmental interests always seem to clash with those of the private companies.B scientific findings are often obtained at the sacrifice of personal interests.C scientific truths are often rejected before they are widely accepted.D scientists are sometimes doubtful about their beliefs.80. The author seems to be suggesting that _______A the vested interests are sometimes on obstacle to the progress of science.B governments are the one to blame for the deterioration of the environment.C a timely response to people’s demand is appreciated by the academia.D the interference by the government resulted in the tragedy of the 1950s.Part V Translation (40 minutes, 20 points )The nations meeting here in Shanghai understand what is at stake. If we don’t stand against terrorism now, every civilized nation will at some point be its target. We will defeat the terrorists by destroying their network, wherever it is found. We will also defeat the terrorists by building an enduring prosperity that promises more opportunity and better lives for all the world’s people.The countries of the Pacific Rim made the decision to open themselves up to the world, and the result is one of the great development success stories of our time. The peoples of this region are more prosperous, healthier, and better educated than they were only two decades ago. And this progress has proved what openness can accomplish.Section B ( 20 minutes, 10 points )也许你觉得自己那些静卧于抽屉中的家书措辞不够优美，气息也不够现代，其实这正是我们所需要的，/毕竟时代的烙印和真挚的情怀是挥之不去，那亘古不变的魔力足以超出我们的想象。
2010年期末考试题_B卷答案
电子科技大学二零 零九 至二零 壹零 学年第 二 学期期 末 考试电路分析基础 课程考试题 B 卷 （ 120 分钟） 考试形式： 闭卷 考试日期 2010年 7 月 12 日课程成绩构成：平时 10 分， 期中 30 分， 实验 0 分， 期末 60 分一、 简答题（共50分）1. 填空和计算，并填写下列各空。
(每题3分)求下列电路的伏安关系。
（5分）u = ( -6V )2ui = ( -2 A )3Ωi = ( 16A )R 49VR 1u = ( -8V )受控源吸收的功率为( 8W )u 5i426+=i u3. 用叠加定理计算下列电路中的U 。
（5分）12V84V 8V 12V 43=+==''='u u u A 电压源单独作用时：当电流源单独作用时：当4. 用节点电压分析法求下列电路的U 1。
（5分）V u u 8412210)414121(11=+=++得到5. 用网孔电流分析法求下列电路的I 1和I 2。
（5分）,1,112481046211221A I A I I I I I -==-=-=-得到6. 求两个双口网络的G 参数。
（5分）第二个：S u i G S u i G S u i G S u i G u u u u 15122;3012130112;151110120110120112222====-========12V 2Ωi学院 姓名 学号 任课老师 选课号/座位号………密………封………线………以………内………答………题………无………效……第 3 页 共 6页图示电路中，已知I S = 5A, I L = 7A, I C = 3A 。
求电阻电流I 1和I R 。
(5分) A I A I R 3;41==答：8. 求u C1(0+),i L1(0-),i L2(0-)和i L1(0+)。
(5分)Ai A i A i L L L 1310*34*1)0(;0)0(;4)0(121=++=+=-=-答：二、计算题（ 共50分）1. 试求电路ab 端的戴维南等效电路。