06级期末试卷A卷
期末考试试题06级A卷(参考答案)
第 1 页(共 4 页)
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n
∂ϕ 2 Q ds = S 2 ∂R ε0
④ (4 分)
dn p n (cosθ ) R n+1
第 3 页(共 4 页)
由③得
⎧ p f cos θ n + ∑ a n R1 p n (cos θ ) = ϕ 0 ⎪ 2 n ⎪ 4πε 0 R1 ⎨ dn ⎪ p f cos θ + p (cosθ ) = ϕ 0 ∑ n+1 n ⎪ 4πε R 2 n R 0 2 ⎩
评阅人
四、计算题（共 40 分，每题 20 分，要求具有逻辑推理，必 要的文字说明和步骤）
v 1. 空心导体球壳的内外半径为R1和R2 ，球中心放置一偶极子 Pf ，球壳上带电Q ，求空间各
点电势和电荷分布。
Q ϕ1 Pf
ϕ0
ϕ2
R1 标系。取原点在球心的球坐标，z轴沿Pf 方向。 方程。 (4 分) 3 空间各点的电势是偶极子产生的电势ϕd =Pf ⋅R /4πε0R 与球壳上自由电荷产生的电势ϕ′ 之和。因为壳内、外没有自由电荷分布，故壳内外的电势ϕ1′和ϕ2′满足拉普拉斯方程： ∇2ϕ′=0 (4 分) (三) 对称性与通解的形式。本题有轴对称性，故通解为 b ' 壳内： ϕ 1 = ϕ d + ϕ 1 = ϕ d + ∑ (a n R n + nn+ 1 ) p n (cos θ ) R n b ' 壳外： ϕ 2 = ϕ d + ϕ 2 = ϕ d + ∑ (a n R n + nn+1 ) p n (cos θ ) R n (四) 边界条件和边值关系。 (4 分) (1) 电荷分布在有限区域： ϕ 2 | R→∞ = 0 ①
希望英语第一册期末考试试卷06级用A卷
希望英语第一册期末考试试卷（06级用）A卷班别：学号：姓名：I. Fill in each blank with the proper form of the word given in the bracket. (10%)1. Y ou can talk to the person (share) the dorm room with you.2. We are going to be meeting each other on a regular ________ (base).3. Without computers, we ______ (not make) the great progress in the last decades.4. Older people do not like their plans to (upset) by something unexpected.5. The plane has been kept in service far longer than _______ (origin) planned.6. Parents who often use physical punishment seem to love their children but tend (be) less patient thanother parents.7. The (quickly) you learn the code words, the less likely you are to make mistakes.8. The speaker only had a (limit) amount of time to make his points understood by the audience.9. (be) a pop star can be quite a hard life, with a lot of traveling.10. The old couple decide to move from the noisy downtown to the countryside because they wanted very much to lead a (n) (relax) life.II. Choose the right answer: (20 %)1. Boarding card A. 身份证2. Business card B. 名片3. ID card C. 登机卡4.Credit card D. 信用卡5. unique A. agree to6. qualify B. being the only one of its type7. approve C. good or better in quality or value, etc.8. superior D. make fit for a position or purpose nothing9. Get along with roommates A. 归结为一个问题10. Blame someone for his failure B. 与世隔绝11. Cut off from the world C. 与室友相处12. Boil down to one question D. 因失败责备某人13.（）双语教学 A. interactive teaching14. ( ) 互动教学 B. Hope Project15. ( ) 教与学 C. bilingual teaching16. ( ) 希望工程 D. teaching & learning17.（）空调 A. Focus Interview18.（）求职咨询 B. Job-seeking Advice19.（）网吧 C. Air-conditioner20.（）焦点访谈 D. Cyber caféIII. Vocabulary and Structure: (30 %)21. In winter this small town is often from the outside world by heavy snowfalls.A. cut offB. cut backC. cut outD. apart22. Hand in your papers when you the test.A. will finishB. have finishedC. will have finishedD. are finishing23. These apples are those I bought at the supermarket yesterday.A. more superior toB. superior thanC. superior toD. more superior than24. Every year there are reports of people dying extremely hot weather.A. in the end ofB. as a result ofC. in front ofD. instead of25. He speaks English, but not his sister does.A. as good asB. so good asC. so well likeD. as well as26. The early pioneers had to many hardships to settle on the new land.A. go along withB. go back onC. go throughD. go into27. The more difficult the problems are, to be able to solve them.A. the less I am likelyB. the less likely I amC. the likely less I amD. I am less likely28. A professor, along with some students, now working in the new laboratory.A. isB. wereC. areD. was29._______ he realized it was too late to return home.A. No sooner it grew dark whenB. Hardly it grew dark thanC. Scarcely it grew dark thanD. It was not until dark that30. This is the house .A. in which Luxun lived inB. where Luxun had lived inC. in which Luxun livedD. Luxun lived in the house31. The manager was critical the way we were doing the work.A. atB. inC. ofD. with32. Just as I was leaving the house, it occurred me that I had forgotten my keys.A. onB. inC. atD. to33. She is in no this evening to go to the concert with you.A. feelingB. attitudeC. spiritD. mood34. I don’t want to eat here any longer: the food is bad but the price is .A. cheapB. excessiveC. lowD. excuse35. After the treatment, the patient seemed a little more this morning.A. liveB. livelyC. likelyD. like36. He is of the two.A. strongB. the strongestC. strongerD. the stronger37. The boy was seen barefooted.A. run awayB. to be run awayC. to run awayD. running away38. She had her finger when she peeled an apple.A. cutB. being cutC. was cutD. cutting39. I was wondering whether you wanted to a film with me this evening.A. take upB. take downC. take inD. take with40. Of the two possible plans I the first one.A. favorsB. flatC. flavorD. favor41．Any student in English can apply for membership.A) having a keen interest B) with a keen interestingC) who is keenly interesting D)when keenly interested42. Y ou most of the questions on the blackboard now if you had reviewed the lessons last night.A) could answer B) should answer C) could have answered D) would have answered43. I regret you that we are unable to offer you a job.A) informing B)to inform C) having informed D) inform44. What she said me that she was an honest girl .A) agreed B)convinced C)believed D)ensured45. is known to the world , Alfred Nobel is a great Swedish inventor and industrialist.A) It B) As C) That D) Which46. The melting point of ice and the boiling point of water are the fixed points the centigrade scale isbased.A) by which B) on which C) at which D) for which47. So far every means tried , but no satisfying result has come out yet.A) is B) has been C) are D) have been48. The family gave a dinner their parents’ golden wedding anniversary.A) in memory B) because of C) in honor of D) due to49. Jack is not much of a football player, but when it maths, he is among the top three in our class.A) points to B) responds to C) refers to D) comes to50. in Nanning for more than 15 years, he knew the city quite well.A) Living B) Lives C) Having lived D) LivedIV. Cloze: (10%)Once a group of tourist who were staying at a hotel in Birmingham were having dinner in the restaurant. Fish was 51 and whi1e they were eating it some of them told interesting stories about finding pearls（珍珠）and other valuable things inside fish. 52 old gentleman，who had listened quietly 53 their conversation，rose and said: “I’ve heard all your stories，and now I’ll tell you one. When I was a young man I was working in a large importing （进口）company in New Y ork. Before long，I fell in love with a pretty（漂亮的）young girl．Very soonwe were engaged（订婚的）. But just two months before our marriage，I was suddenly sent（派送）to Birmingham 54 very important business. I left my sweetheart（恋人），promising to write 55 her.”“I was obliged (被迫；不得不) to staying in Birmingham longer than I had expected. 56 last my work was done，and just before I left for home，I bought a beautiful and very expensive diamond ring（戒指），intending （试图）to give it to my sweetheart。
2006年6月英语A级真题试卷
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2006学年第一学期六年级期末考试数学试卷
2006学年第一学期六年级期末考试数学试卷（完卷时间：90分钟 满分：100分）一、填空题（本大题共14题，每小题2分，满分28分） 1．分数312,,469的最小公分母是 ． 2．写出不大于50的正整数中既能被2整除又能被5整除的数是 ． 3．计算：13132(22)1515÷⨯= ．4．求比值：18秒∶2.5分钟= ． 5．在分数449517,1,,2,95121432中，能化成有限小数的分数有 个． 6．比较大小：722_____π． 7．一件商品的成本价是90元，如果以20%的盈利率售出，那么这件商品的售价 为 元．8．有一个四位数，千位上是最小的既是奇数又是素数的数，百位上是2和3的最小公倍数，十位上是最小的自然数，个位上是只有3个因数的偶数，这个四位数是 ．9． 如果图中阴影部分表示1，那么表示的分数是 ．10．有分别标有1～10数字的相同大小的纸片10张，那么抽到标有偶数的纸片的可能性的大小为 ．11．已知扇形半径是10厘米，弧长是31.4厘米，那么扇形的面积是 平方厘米． 12．已知：a ∶b = 3∶4，b ∶c = 3∶4，求：a ∶b ∶c 的值是 ．学校_______________________ 班级__________ 学号_________ 姓名______________……………………………………………密○………………………………………封○………………………………………○线…………………………35%5%ABC D13．已知A =532⨯⨯,那么它的所有因数的个数是 ．14．一张比例尺为1∶6 000 000的中国地图上测得上海至北京的距离约为18厘米，那么上海到北京的实际距离约是 千米．二、选择题（本大题共4题，每小题2分，满分8分）（每题只有一个选项正确） 15．如果x ，y 都不为零，且y x 32=，那么下列比例中正确的是…………………（ ）（A ）23x y =； （B ）23yx =； （C ）y x 32=； （D ）y x 23=．16．如果数225,233,A B =⨯⨯=⨯⨯那么A 和B 的最大公因数和最小公倍数是（ ） （A ）2，360； （B ）2，180； （C ）4，360； （D ）4，180．17．下面各组数中，第一个数能整除第二个数的是………………………………（ ） （1）9和36 ；（2）15和35；（3）13和39； （4）48和12；（5）10和30；（6）51和17．（A ）1个； （B ）2个； （C ）3个； （D ）4个．18．如图是一个扇形统计图，那么从以下图中可以得出的正确结论的个数是…（ ）①A 占总体的25%；②表示B 的扇形的圆心角是18°； ③C 和D 所占总体的百分比相等；④分别表示A 、B 、C 的扇形的圆心角的度数之比为5∶1∶7． （A ）1个； （B ）2个； （C ）3个； （D ）4个． 三、简答题、（本大题共6题，每小题6分，满分36分）19．在数轴上分别画出点A 、B 、C 、D ，，表示数，点表示数点32225.1-B A 点C 表示数31，点D 表示数-175%，并将点A 、B 、C 、D 所表示的数用“＞”连接．20．某超市十一月份的销售额为20万元，比十月份增长了5.5%,该超市计划十二月份销售额的增长率比上一个月提高1个百分点，求该超市计划十二月份销售额．21．计算：14 (1250.05)45-++⨯．22．计算：3124(2.2) 6.9 5103÷++⨯．23．如图，已知正方形的边长为2，求右图中阴影部分的面积和周长．（结果保留π）24．观察下列流程图，根据输入数据，得到输出数据；列出算式，写明计算过程．（1）输入分数得10953÷；（2）输入分数得12515÷．四、解答题（本题共4题，每小题7分，满分28分）25．王阿姨把1000元人民币存入银行，月利率为0.14%，定期三年，到期应付20%的利息税，王阿姨到期实际可得本利和多少元？1 26．六（1）班有50位同学，老师推荐一本数学练习册让大家购买，统计后，全班有5的同学已买，于是委托班长去书店为其他同学购买．这本书的定价是8元，班长先预收了每人8元，书店广告标价购买25本以上打8.5折，购买30本以上打8折，购买35本以上打7.5折，班长共花了10元钱的交通费，由购书的同学平摊．问（1）有多少人需要购买？他们能享受几折优惠？（2）班长应该付给书店多少元？（3）班长需要退还给每位同学多少元？27．小王和小张合租一套公寓，两家暂时合用一个电表，交电费时就按各自所有电器的总瓦数来分摊．两家所用电器的功率如下表：两月后收到供电局的交电费通知单，应交电费446元．问两家各应交电费多少元？28．阅读理解题：小明以432为例，用下面的计算过程来说明432能被9整除：432 = 400+30+2= 4×100+3×10+2= 4×（99+1）+3×（9+1）+2= 4×99+4+3×9+3+2 =4×99+3×9+4+3+2= 4×9×11+3×9+4+3+2= 9×（4×11+3）+4+3+2一定能被9整除是否能被9整除因为4+3+2能被9整除，所以432一定能被9整除.请你用小明的方法来说明243不仅能被9整除，也能被3整除．…………………………………………………………………………………………………………………………………………………………………………密封线内不准答题2006学年第一学期期末考试六年级数学试卷参考答案一、填空题（本大题共14题，每小题2分，满分28分）1. 362. 10，20，30，40，503.21 4. 253 5. 3 6. ＜ 7. 108元 8. 3604 9. 34 10. 9411. 157 12. 9∶12∶16 13. 8(个) 14. 1080 二、选择题（本大题共4题，每小题2分，满分8分）15. B 16. B 17.C 18. D 三、简答题、（本大题共6题，每小题6分，满分36分）19．标出A 、B 、C 、D 四点 （各1分）25.1>31>-75%>321- （2分） 20．解：20×（5.5%+1%） （2分） =20×6.5%=1.3(万元) （1分） 20+1.3=21.3(万元) (3分) 或 20×（1+5.5%+1%） （4分） =20×105.5% (1分) =21.3(万元) （1分） 21.分）分）分）（原式2(04.1904.0192(04.020104.020544525405.0542554411=+=++-=++⨯-=⨯+⨯+⨯-=22.分）（分）（分）（原式26.626.426.4231052329.6321023534=+=+⨯=⨯+÷= 23.D (1)分）（）（分）（分）（阴影三角形扇形弓形142221222214411-=-=-=⨯⨯-⨯=-=ππππSS S sABC ABC ACBC或列综合算式（3分）(2)周长=分）（分）122(22412ππ=⨯⨯⨯⨯24．．分）（分）分）12143321(1321(3291053)(!=⨯∴<=⨯分）（分）分）（）（143434643231(123123215512=-=-∴>=⨯25．解：1000+1000×0.14%×12×3×（1-20%） （3分）=1000+1.4×36×0.8 （2分）=1000+40.32=1040.32 （元） （1分） 答：（略） （1分）26．解：（1）40人； （1分）7.5折 （1分） （2）8×75%×40 （2分）=6×40=240（元） （1分）（3）4.04010=÷ （1分） 8-6-0.4=1.6(元) （1分）答：（略）27．解：小王家的用电量=800+1200+40+60+3×40=2220（W ）小张家的用电量=800+1200+40+60+2×40+60=2240（W ） （1分） 小王家的用电量∶小张家的用电量=2220∶2240=111∶112 （1分） 小王家应交的电费=分）元）（2{222112111111446=+⨯小张家应交的电费=分）（元）（2224112111112446=+⨯答：（略） （1分）28．解：（1）243=200+40+3=2×100+4×10+3 （1分） =2×（99+1）+4×（9+1）+3 =2×99+2+4×9+4+3=2×99+4×9+2+4+3=2×9×11+4×9+2+4+3=9×（2×11+4）+2+4+3 （2分） =9×（2×11+4）+9=9×（2×11+4+1）（1分）所以243一定能被9整除.（1分）（2） 243=2×99+4×9+2+4+3=2×3×33+4×3×3+2+4+3=3×（2×33+4×3）+2+4+3 （2分） =3×（2×33+4×3）+9 =3×（2×33+4×3）+3×3 =3×（2×33+4×3+3）所以243一定能被3整除.。
A卷 本科《电路》期末考试试题
二、画出图题二中各图的等效电路（每图2分，共12分）
三、(本题10分)求图题三所示电路的开路电压比⋅⋅10U U 四、(本题8分)如图题四所示电路，,用节点电压法求两端的电压。
Ω=85R 已知R U 五、（本题12分）如图题五所示电路，在1时,电压表的读数为20V;在2时,电流表的读数为50mA.。
K K 在３时，若，电压表及电流表的读数各多少？K Ω=100R 六、（本题8分）求题五中（1）的消耗功率为多大？（2）为何值时它能获得最大功率？R R max P max P 是多少？七、（本题12分如图题七所示电路，t <0时,闭合,电路已达稳定状态.今于t =0时断开开关，(1)用K K 三要素法求t >0时的全响应，；(2)经过零值的时刻；(3)画出的波形图。
)(t u c )(t u c 0t )(t u c 八、（本题10分）如图题八所示电路，已知电流表的读数为10A ，电压表的读数为100V 。
求电流表的读数和电压1A 1V A 表的读数。
V 九、（本题12分）如图题九所示，是一功率为60W ，功率因数的日光灯电路（为感性负载），接在电压220V 的正5.01=λ弦电源上（频率H Z ）。
求：（1）电源供给电路的电流；(2)视在功率；（3）负载的无功功率；(4)50f =I S L Q 简单画出电路的相量图；（5）从不增加电路的功率损耗并减少无功功率出发，请画出提高日光灯功率因数的电路图。
离散数学期末考试题答案
北京交通大学2007-2008学年第二学期《离散数学基础（信科专业）》期末考试卷（A）学院：____________ _专业：___________________ 班级____________姓名：学号：□选修□必修一、填空题（共10分，每空1分）1.在推理理论中，推导过程中如果一个或多个公式重言蕴涵某个公式，则这个公式就可以引入推导过程中，这一推理规则叫做（T规则）。
2.设A={a，{b}}，则A的幂集是P (A)= {Φ, a，{b}, {a，{b}}；3.设R 是集合A上的二元关系，如果关系R同时具有自反性、反对称性和传递性，则称R是A上的一个偏序关系。
4.既是满射，又是单射的映射称为1-1映射（双射）。
5.设S为非空有限集,代数系统<P(S),∪>的单位元和零元分别为S和φ。
6.具有n个顶点的无向完全图共有n(n-1)/2条边。
7.简单图是指无环、无重边的图。
8.k-正则图是指所有顶点的度数均为k的的图。
9.Hamilton通路是指通过图中所有顶点一次且仅一次的通路。
10.设G=（E，V）是图，如果G是连通的，则P（G）= 1 。
11.命题公式(P→Q) ∧ (P→R)的主析取范式中包含极小项（ A ）A．P∧Q∧R；B．P∧Q∧⌝R；C ．P ∧⌝Q ∧R ；D ．P ∧⌝Q ∧⌝R12. 下列谓词公式中（ A ）不正确。
A ．(∃x)(A(x) →B) ⇔ (∃x) A(x) →B ； B ．(∃x)(B →A(x)) ⇔ B →(∃x) A(x)；C ．(∀x)(B →A(x)) ⇔ B →(∀x) A(x)；D ．(∀x)(A(x)∨B) ⇔(∀x)A(x)∨B ；13. 设S = {2，a ，{3}，4}，R ={{a}，3，4，1}，指出下面的写法中正确的是（ D ）（A ）R=S ； （B ）{a,3}⊆S ； （C ）{a}⊆R ；（D ）φ⊆R ；14. 下列命题公式不是重言式的是 C 。
2006年6月17日大学英语六级(CET-6)真题试卷(A卷)及答案、听力原文
2006年6月17日大学英语六级(CET-6)真题试卷(A卷)注意事项一、将自己的校名、姓名、准考证号写在答题卡上。
将本试卷代号(A、B卷)划在答题卡上。
二、试卷和答题卡均不得带出考场。
考试结束，监考员收卷后考生才可离开。
三、仔细读懂题目的说明。
四、多项选择题的答案一定要划在答题卡上，凡是写在试卷上的答案一律无效。
每题只能选一个答案：如多选。
则该题无分，选定答案后，用铅笔在相应字母的中部划一条横线。
正确方法是：A) B) C) D)。
使用其他符号答题者不给分，划线要有一定粗度，浓度要盖过字母底色。
五、如果要改动答案，必须先用橡皮擦净原来选定的答案，然后再按上面的规定重新答题。
六、试题的第四部分改错(Error Correction)和第五部分作文(Writing)印刷在答题卡上，请用黑色字迹签字笔在答题卡上作答。
七、在90分钟内做完试题的第一至第四部分，90分钟后，监考员收取试卷，然后考生再做第五部分作文题，答题时间为30分钟。
全部考试时间为120分钟，不得拖延时间。
八、在考试过程中要注意对自己的答案保密，若被他人抄袭，一经发现，后果自负。
全国大学英语四、六级考试委员会Part I Listening Comprehension (20 minutes)Section ADirections: In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. Both theconversation and the question will be spoken only once. After eachquestion there will be a pause. During the pause, you must read the fourchoices marked A), B), C) and D), and decide which is the best answer.Then mark the corresponding letter on the Answer Sheet with a single linethrough the centre.1. A) She met with Thomas just a few days ago.B) She can help with the orientation program.C) She is not sure she can pass on the message.D) She will certainly try to contact Thomas.2. A) Set the dinner table.B) Change the light bulb.C) Clean the dining room.D) Hold the ladder for him.3. A) He‟d like a piece of pie.B) He‟d like some coffee.C) He‟d rather stay in the warm room.D) He‟s just had dinner with his friends.4. A) He has managed to sell a number of cars.B) He is contented with his current position.C) He might get fired.D) He has lost his job.5. A) Tony‟s secretary.B) Paul‟s girlfriend.C) Paul‟s colleague.D) Tony‟s wife.6. A) He was fined for running a red light.B) He was caught speeding on a fast lane.C) He had to run quickly to get the ticket.D) He made a wrong turn at the intersection.7. A) He has learned a lot from his own mistakes.B) He is quite experienced in taming wild dogs.C) He finds reward more effective than punishment.D) He thinks it important to master basic training skills.8. A) At a bookstore.B) At the dentist‟s.C) In a restaurant.D) In the library.9. A) He doesn‟t want Jenny to get into trouble.B) He doesn‟t agree with the woman‟s remark.C) He thinks Jenny‟s workload too heavy at college.D) He believes most college students are running wild.10. A) It was applaudable.B) It was just terrible.C) The actors were enthusiastic.D) The plot was funny enough.Section BDirections: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will bespoken only once. After you hear a question, you must choose the bestanswer from the four choices marked A), B), C) and D). Then mark thecorresponding letter on the Answer Sheet with a single line through thecentre.Passage OneQuestions 11 to 13 are based on the passage you have just heard.11. A) Social work.B) Medical care.C) Applied physics.D) Special education.12. A) The timely advice from her friends and relatives.B) The two-year professional training she received.C) Her determination to fulfill her dream.D) Her parents‟ consistent moral support.13. A) To get the funding for the hospitals.B) To help the disabled children there.C) To train therapists for the children there.D) To set up an institution for the handicapped.Passage TwoQuestions 14 to 17 are based on the passage you have just heard.14. A) At a country school in Mexico.B) In a mountain valley of Spain.C) At a small American college.D) In a small village in Chile.15. A) By expanding their minds and horizons.B) By financing their elementary education.C) By setting up a small primary school.D) By setting them an inspiring example.16. A) She wrote poetry that broke through national barriers.B) She was a talented designer of original school curriculums.C) She proved herself to be an active and capable stateswoman.D) She made outstanding contributions to children‟s education.17. A) She won the 1945 Nobel Prize in Literature.B) She was the first woman to win a Nobel Prize.C) She translated her books into many languages.D) She advised many statesmen on international affairs.Passage ThreeQuestions 18 to 20 are based on the passage you have just heard.18. A) How animals survive harsh conditions in the wild.B) How animals alter colors to match their surroundings.C) How animals protect themselves against predators.D) How animals learn to disguise themselves effectively.19. A) Its enormous size.B) Its plant-like appearance.C) Its instantaneous response.D) Its offensive smell.20. A) It helps improve their safety.B) It allows them to swim faster.C) It helps them fight their predators.D) It allows them to avoid twists and turns.Part II Reading Comprehension (35 minutes)Directions: There are 4 passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choicesmarked A), B), C) and D). You should decide on the best choice and markthe corresponding letter on the Answer Sheet with a single line through thecentre.Passage OneQuestions 21 to 25 are based on the following passage.There are good reasons to be troubled by the violence that spreads throughout the media. Movies, Television and video games are full of gunplay and bloodshed, and one might reasonably ask what‟s wrong with a society that presents videos of domestic violence as entertainment.Most researchers agree that the causes of real-world violence are complex. A 1993 study by the U.S. National Academy of Sciences listed “biological, individual, family, peer, school, and community factors” as all playing their parts.Viewing abnormally large amounts of violent television and video games may well contribute to violent behavior in certain individuals. The trouble comes when researchers downplay uncertainties in their studies or overstate the case for causality (因果关系). Skeptics were dismayed several years ago when a group of societies including the American Medical Association tried to end the debate by issuing a joint statement: “At this time, well over 1,000 studies... point overwhelmingly to a causal connection between media violence and aggressive behavior in some children.”Freedom-of-speech advocates accused the societies of catering to politicians, and even disputed the number of studies (most were review articles and essays, they said). When Jonathan Freedman, a social psychologist at the University of Toronto, reviewed the literature, he found only 200 or so studies of television-watching and aggression. And when he weeded out “the most doubtful measures of aggression”, only 28% supported a connection.The critical point here is causality. The alarmists say they have proved that violent media cause aggression. But the assumptions behind their observations need to be examined. When labeling games as violent or non-violent, should a hero eating a ghost really be counted as a violent event? And when experimenters record the time it takes game players to read …aggressive‟ or …non-aggressive‟ words from a list, can we be sure what they are actually measuring? The intent of the new Harvard Center on Media and Child Health to collect and standardize studies of media violence in order to compare their methodologies, assumptions and conclusions is an important step in the right direction.Another appropriate step would be to tone down the criticism until we know more. Several researchers write, speak and testify quite a lot on the threat posed by violence in the media. That is, of course, their privilege. But when doing so, they often come out with statements that the matter has now been settled, drawing criticism from colleagues. In response, the alarmists accuse critics and news reporters of being deceived by the entertainment industry. Such clashes help neither science nor society.21. Why is there so much violence shown in movies, TV and video games?A) There is a lot of violence in the real world today.B) Something has gone wrong with today‟s society.C) Many people are fond of gunplay and bloodshed.D) Showing violence is thought to be entertaining.22. What is the skeptics (Line 3. Para. 3) view of media violence?A) Violence on television is a fairly accurate reflection of real-world life.B) Most studies exaggerate the effect of media violence on the viewers.C) A causal relationship exists between media and real-world violence.D) The influence of media violence on children has been underestimated.23. The author uses the term “alarmists” (Line 1. Para. 5) to refer to those who________.A) use standardized measurements in the studies of media violenceB) initiated the debate over the influence of violent media on realityC) assert a direct link between violent media and aggressive behaviorD) use appropriate methodology in examining aggressive behavior24. In refuting the alarmists, the author advances his argument by first challenging________.A) the source and amount of their dataB) the targets of their observationC) their system of measurementD) their definition of violence25. What does the author think of the debate concerning the relationship between themedia and violence?A) More studies should be conducted before conclusions are drawn.B) It should come to an end since the matter has now been settled.C) The past studies in this field have proved to be misleading.D) He more than agrees with the views held by the alarmists.Passage TwoQuestions 26 to 30 are based on the following passage.You‟re in trouble if you have to buy your own brand-name prescription drugs. Over the past decade, prices leaped by more than double the inflation rate. Treatments for chronic conditions can easily top $2,000 a month-no wonder that one in four Americans can‟s afford to fill their prescriptions. The solution? A hearty chorus of “O Canada.” North of the border, where price controls reign, those same brand-name drugs cost 50% to 80% less.The Canadian option is fast becoming a political wake-up call, “If our neighbors canbuy drugs at reasonable prices, why can‟t we? Even to whisper that thought provokes anger. “Un-American!” And-the propagandists‟trump card (王牌)—“Wreck our brilliant health-care system.” Supersize drug prices, they claim, fund the research that sparks the next generation of wonder drugs. No sky-high drug price today, no cure for cancer tomorrow. So shut up and pay up.Common sense tells you that‟s a false alternative. The reward for finding, say, a cancer cure is so huge that no one‟s going to hang it up. Nevertheless, if Canada-level pricing came to the United States, the industry‟s profit margins would drop and the pace of new-drug development would slow. Here lies the American dilemma. Who is all this splendid medicine for? Should our health-care system continue its drive toward the best of the best, even though rising numbers of patients can‟t afford it? Or should we direct our wealth toward letting everyone in on today‟s level of care? Measured by saved lives, the latter is almost certainly the better course.To defend their profits, the drug companies have warned Canadian wholesalers and pharmacies (药房) not to sell to Americans by mail, and are cutting back supplies to those who dare.Meanwhile, the administration is playing the fear card. Officials from the Food and Drug Administration will argue that Canadian drugs might be fake, mishandled, or even a potential threat to life.Do bad drugs fly around the Internet? Sure-and the more we look, the more we‟ll find, But I haven‟t heard of any raging epidemics among the hundreds of thousands of people buying crossborder.Most users of prescription drugs don‟t worry about costs a lot. They‟re sheltered by employee insurance, owing just a $20 co-pay. The financial blows rain, instead, on the uninsured, especially the chronically ill who need expensive drugs to live, This group will still include middle-income seniors on Medicare, who‟ll have to dig deeply into their pockets before getting much from the new drug benefit that starts in 2006.26. What is said about the consequence of the rocketing drug prices in the U.S.?A) A quarter of Americans can‟t afford their prescription drugs.B) Many Americans can‟t afford to see a doctor when they fall ill.C) Many Americans have to go to Canada to get medical treatment.D) The inflation rate has been more than doubled over the years.27. It can be inferred that America can follow the Canadian model and curb its soaringdrug prices by ________.A) encouraging people to buy prescription drugs onlineB) extending medical insurance to all its citizensC) importing low-price prescription drugs from CanadaD) exercising price control on brand-name drugs28. How do propagandists argue for the U.S. drug pricing policy?A) Low prices will affect the quality of medicines in America.B) High prices are essential to funding research on new drugs.C) Low prices will bring about the anger of drug manufacturers.D) High-price drugs are indispensable in curing chronic diseases.29. What should be the priority of America‟s health-care system according to theauthor?A) To resolve the dilemma in the health-care system.B) To maintain America‟s lead in the drug industry.C) To allow the vast majority to enjoy its benefits.D) To quicken the pace of new drug development.30. What are American drug companies doing to protect their high profits?A) Labeling drugs bought from Canada as being fakes.B) Threatening to cut back funding for new drug research.C) Reducing supplies to uncooperative Canadian pharmacies.D) Attributing the raging epidemics to the ineffectiveness of Canadian drugs.Passage ThreeQuestions 31 to 35 are based on the following passage.Age has its privileges in America. And one of the more prominent of them is the senior citizen discount. Anyone who has reached a certain age—in some cases as low as 55—is automatically entitled to a dazzling array of price reductions at nearly every level of commercial life. Eligibility is determined not by one‟s need but by the date on one‟s birth certificate. Practically unheard of a generation ago, the discounts have become a routine part of many businesses—as common as color televisions in motel rooms and free coffee on airliners.People with gray hair often are given the discounts without even asking for them；yet, millions of Americans above age 60 are healthy and solvent (有支付能力的). Businesses that would never dare offer discounts to college students or anyone under 30 freely offer them to older Americans. The practice is acceptable because of the widespread belief that “elderly”and “needy”are synonymous (同义的). Perhaps that once was true, but today elderly Americans as a group have a lower poverty rate than the rest of the population. To be sure, there is economic diversity within the elderly, and many older Americans are poor, But most of them aren‟t.It is impossible to determine the impact of the discounts on individual companies. For many firms, they are a stimulus to revenue. But in other cases the discounts are given at the expense, directly or indirectly, of younger Americans. Moreover, they are a direct irritant in what some politicians and scholars see as a coming conflict between thegenerations.Generational tensions are being fueled by continuing debate over Social Security benefits, which mostly involves a transfer of resources from the young to the old. Employment is another sore point, Buoyed (支持) by laws and court decisions, more and more older Americans are declining the retirement dinner in favor of staying on the job-thereby lessening employment and promotion opportunities for younger workers.Far from a kind of charity they once were, senior citizen discounts have become a formidable economic privilege to a group with millions of members who don‟t need them.It no longer makes sense to treat the elderly as a single group whose economic needs deserve priority over those of others. Senior citizen discounts only enhance the myth that older people can‟t take care of themselves and need special treatment；and they threaten the creation of a new myth, that the elderly are ungrateful and taking for themselves at the expense of children and other age groups. Senior citizen discounts are the essence of the very thing older Americans are fighting against-discrimination by age.31. We learn from the first paragraph that ________.A) offering senior citizens discounts has become routine commercial practiceB) senior citizen discounts have enabled many old people to live a decent lifeC) giving senior citizens discounts has boosted the market for the elderlyD) senior citizens have to show their birth certificates to get a discount32. What assumption lies behind the practice of senior citizen discounts?A) Businesses, having made a lot of profits, should do something for society inreturn.B) Old people are entitled to special treatment for the contribution they made tosociety.C) The elderly, being financially underprivileged, need humane help from society.D) Senior citizen discounts can make up for the inadequacy of the Social Securitysystem.33. According to some politicians and scholars, senior citizen discounts will ________.A) make old people even more dependent on societyB) intensify conflicts between the young and the oldC) have adverse financial impact on business companiesD) bring a marked increase in the companies revenues34. How does the author view the Social Security system?A) It encourages elderly people to retire in time.B) It opens up broad career prospects for young people.C) It benefits the old at the expense of the young.D) It should be reinforced by laws and court decisions.35. Which of the following best summarizes the author‟s main argument?A) Senior citizens should fight hard against age discrimination.B) The elderly are selfish and taking senior discounts for granted.C) Priority should be given to the economic needs of senior citizens.D) Senior citizen discounts may well be a type of age discrimination.Passage FourQuestions 36 to 40 are based on the following passage.In 1854 my great-grandfather, Morris Marable, was sold on an auction block in Georgia for $500. For his white slave master, the sale was just “business as usual.” But to Morris Marable and his heirs, slavery was a crime against our humanity. This pattern of human rights violations against enslaved African-Americans continued under racial segregation for nearly another century.The fundamental problem of American democracy in the 21st century is the problem of “structural racism” the deep patterns of socio-economic inequality and accumulated disadvantage that are coded by race, and constantly justified in public speeches by both racist stereotypes and white indifference. Do Americans have the capacity and vision to remove these structural barriers that deny democratic rights and opportunities to millions of their fellow citizens?This country has previously witnessed two great struggles to achieve a truly multicultural democracy.The First Reconstruction (1865-1877) ended slavery and briefly gave black men voting rights, but gave no meaningful compensation for two centuries of unpaid labor. The promise of “40 acres and a mule (骡子)”was for most blacks a dream deferred (尚未实现的).The Second Reconstruction (1954-1968), or the modern civil rights movement, ended legal segregation in public accommodations and gave blacks voting rights. But these successes paradoxically obscure the tremendous human costs of historically accumulated disadvantage that remain central to black Americans‟ lives.The disproportionate wealth that most whites enjoy today was first constructed from centuries of unpaid black labor. Many white institutions, including some leading universities, insurance companies and banks, profited from slavery. This pattern of white privilege and black inequality continues today.Demanding reparations (赔偿) is not just about compensation for slavery and segregation. It is, more important, an educational campaign to highlight the contemporary reality of “racial deficits” of all kinds, the unequal conditions that impact blacks regardless of class. Structural racism‟s barriers include “equity inequity.” the absence of black capital formation that is a direct consequence of America‟s history. Onethird of all black households actually have negative net wealth. In 1998 the typical black family‟s net wealth was $16,400, less than one fifth that of white families. Black families are denied home loans at twice the rate of whites.Blacks remain the last hired and first fired during recessions. During the 1990-91 recession, African-Americans suffered disproportionately. At Coca-Cola, 42 percent of employees who lost their jobs were blacks. At Sears, 54 percent were black, Blacks have significantly shorter life spans, in part due to racism in the health establishment. Blacks are statistically less likely than whites to be referred for kidney transplants or early-stage cancer surgery.36. To the author, the auction of his great-grandfather is a typical example of ________.A) crime against humanityB) unfair business transactionC) racial conflicts in GeorgiaD) racial segregation in America37. The barrier to democracy in 21st century America is ________.A) widespread use of racist stereotypesB) prejudice against minority groupsC) deep-rooted socio-economic inequalityD) denial of legal rights to ordinary blacks38. What problem remains unsolved in the two Reconstructions?A) Differences between races are deliberately obscured.B) The blacks are not compensated for their unpaid labor.C) There is no guarantee for blacks to exercise their rights.D) The interests of blacks are not protected by law.39. It is clear that the wealth enjoyed by most whites ________.A) has resulted from business successes over the yearsB) has been accompanied by black capital formationC) has derived from sizable investments in educationD) has been accumulated from generations of slavery40. What does the author think of the current situation regarding racial discrimination?A) Racism is not a major obstacle to blacks‟ employment.B) Inequality of many kinds remains virtually untouched.C) A major step has been taken towards reparations.D) Little has been done to ensure blacks‟ civil rights.Part III Vocabulary (20 minutes)Directions: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A), B), C) and D). Choose the ONE answer that bestcompletes the sentence. Then mark the corresponding letter on the AnswerSheet with a single line through the centre.41. Because of the ________ of its ideas, the book was in wide circulation both at homeand abroad.A) originalityB) subjectivityC) generalityD) ambiguity42. With its own parliament and currency and a common ________ for peace, theEuropean Union declared itself—in 11 official languages—open for business.A) inspirationB) assimilationC) intuitionD) aspiration43. America has now adopted more ________ European-style inspection systems, andthe incidence of food poisoning is falling.A) discreteB) solemnC) rigorousD) autonomous44. Mainstream pro-market economists all agree that competition is an ________ spurto efficiency and innovation.A) extravagantB) exquisiteC) intermittentD) indispensable45. In the late 19th century, Jules Verne, the master of science fiction, foresaw many ofthe technological wonders that are ________ today.A) transientB) commonplaceC) implicitD) elementary46. I was so ________ when I used the automatic checkout lane in the supermarket forthe first time.A) immersedB) assaultedC) thrilledD) dedicated47. His arm was ________ from the shark‟s mouth and reattached, but the boy, whonearly died, remained in a delicate condition.A) retrievedB) retainedC) repelledD) restored48. Bill Gates and Walt Disney are two people America has ________ to be the GreatestAmerican.A) appointedB) appeasedC) nicknamedD) dominated49. The ________ majority of citizens tend to believe that the death penalty will helpdecrease the crime rate.A) overflowingB) overwhelmingC) prevalentD) premium50. We will also see a ________ increase in the number of televisions per household, assmall TV displays are added to clocks, coffee makers and smoke detectors.A) startlingB) surpassingC) suppressingD) stacking51. The advance of globalization is challenging some of our most ________ values andideas, including our idea of what constitutes “home”.A) enrichedB) enlightenedC) cherishedD) chartered52. Researchers have discovered that ________ with animals in an active way maylower a person‟s blood pressure.A) interactingB) integratingC) migratingD) merging53. The Beatles, the most famous British band of the 1960s, traveled worldwide formany years, ________ cultural barriers.A) transportingB) transplantingC) transferringD) transcending54. In his last years, Henry suffered from a disease that slowly ________ him of muchof his sight.A) relievedB) jeopardizedC) deprivedD) eliminated55. Weight lifting, or any other sport that builds up your muscles, can make bonesbecome denser and less ________ to injury.A) attachedB) proneC) immuneD) reconciled56. He has ________ to museums hundreds of his paintings as well as his entirepersonal collection of modern art.A) ascribedB) attributedC) designatedD) donated57. Erik‟s website contains ________ photographs and hundreds of articles and shortvideos from his trip around the globe.A) prosperousB) gorgeousC) spaciousD) simultaneous58. Optimism is a ________ shown to be associated with good physical health, lessdepression and longer life.A) trailB) traitC) traceD) track59. The institution has a highly effective program which helps first-year students makea successful ________ into college life.A) transformationB) transmissionC) transitionD) transaction60. Philosophers believe that desire, hatred and envy are “negative emotions” which________ the mind and lead it into a pursuit of power and possessions.A) distortB) reinforceC) exertD) scramble61. The term “glass ceiling” was first used by the Wall Street Journal to describe theapparent barriers that prevent women from reaching the top of the corporate ________.A) seniorityB) superiorityC) heightD) hierarchy62. Various efforts have been made over the centuries to predict earthquakes, includingobserving lights in the sky and ________ animal behavior.A) abnormalB) exoticC) absurdD) erroneous63. Around 80 percent of the ________ characteristics of most white Britons have beenpassed down from a few thousand Ice Age hunters.A) intelligibleB) randomC) spontaneousD) genetic64. Picasso gained popularity in the mid-20th century, which was ________ of a newattitude towards modern art.A) informativeB) indicativeC) exclusiveD) expressive65. The country was an island that enjoyed civilized living for a thousand years or morewith little ________ from the outside world.A) disturbanceB) discriminationC) irritationD) irregularity66. Fashion designers are rarely concerned with vital things like warmth, comfort and________.A) stabilityB) capabilityC) durabilityD) availability67. Back in the days when people traveled by horse and carriage, Karl Benz ________the world with his extraordinary three-wheeled motor vehicle.A) inhibitedB) extinguishedC) quenchedD) stunned。
06级函授A卷答案
2008~2009学年第二学期期末考试 《铁路轨道》试题A 答案 (适用班级：函授铁道工程07级)1、钢轨是铁路轨道的组成部件 ，要求钢轨具有足够的 强度 、 韧性和 耐磨性 。
2、锰、硅可提高钢轨的质量。
磷、硫都是 有害成分 。
3、锁定轨温：是指无缝线路的长钢轨无温度力状态时的轨温。
通常将铺设长钢轨的两端落槽时的平均轨温作为锁定轨温。
4、三角坑：在不足18米的距离内，先是左股较右股钢轨高，两个最大水平误差超过4㎜。
5、应力放散：无缝线路在运用过程中，原锁定轨温不明或发生变化时，在适当轨温时，将中间扣件、防爬设备松开，采取措施使钢轨伸缩，释放内部应力，再重新锁定的过程。
二、填空题（每空1分，共25分）1、 无缝线路的锁定轨温，是长钢轨无 温度应力或温度力 时的轨温。
通常将铺设长钢轨的两端正常就位时的 平均轨温 作为锁定轨温。
2、无缝线路钢轨内温度力和温度应力的大小，与轨温 变化量的大小 有直接关系，适当控制轨温的 变化量 ，可降低钢轨内部温度力。
3、在长钢轨两端接头处，防止钢轨纵向位移的阻力，叫 接头阻力 。
它是由钢轨与夹板间的 摩擦 阻力所提供。
4、道床阻力通常取轨枕位移量为 2㎜ 时的相应阻力值作为 计算阻力值 。
5、无缝线路道床横向阻力是防止 涨轨跑道 、 轨距变化 ，保证轨道稳定的主要因素。
6、木枕失效的原因是 腐朽 、 机械磨损 、 裂缝 。
7、每千米最多铺设混凝土枕为 1840根 ，木枕为 1920根 。
8、连续弹性基础梁理论将钢轨视为一根支撑在 弹性支座 上的无限长梁。
9、曲线轨道的主要病害是： 方向不良 、 磨耗超限 。
10、无缝线路依据处理钢轨内部温度应力方式不同，分为 温度应力式 和 放散温度应力式 两种类型。
11、无缝线路轨道除承受列车荷载外，还要承受巨大的 温度力 ，它仅与 温度变化幅度 成正比关系，而与 线路的长度 无关。
12、温度应力式无缝线路的两端钢轨联接有两种型式：一种是 普通夹板接头 ；另一种为 尖轨接头 。
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南京大学金陵学院期末试卷(A卷)2008~2009学年度第一学期课程名称:嵌入式系统原理与应用教师姓名:________试卷类型:_开__专业:______________ 学号：_____________姓名：_______总分：_______一、判断题（共10题,每题1分,计10分）1 设计SoC相当于设计一个嵌入式计算机系统，是嵌入式系统开发的核心所在。
2．应用程序可以直接在MAND Flash闪存内运行，3．嵌入式操作系统大多采用抢占式调度内核4．嵌入式系统的操作系统和应用程序是一体化集成在一起的，其结构不易用层次结构来表达。
5．嵌入式系统的RTOS要求操作系统比应用软件具有更高的可靠性6．硬实时应用对实时能力有严格的要求,响应时间在毫秒或秒级.7．20世纪90年代，现代操作系统的设计思想开始渗入RTOS领域。
此间,风河推出了Vxwork。
并组成自己完整的开发环境。
8．嵌入式系统已进入32位处理器时代,软件开发规模迅速增大，嵌入式软件规模已达到数百万行至数千万行的规模。
9．对安装有多核处理器的目标板调试, 目前还不能用JTAG-ICE进行。
10．指令集模拟器即是一种CPU仿真，可方便用户在PC机上完成绝大部分软件的调试工作 .二、选择题（共25题,每题2分,计50分）1．一款采用ARM V7结构,具备高可靠性,强实时处理能力的ARM内核应是______。
A ARM11系列 B．Cortex M系列C．Cortex A系列 D．Cortex R系列2．实际的嵌入式系统对实时性的要求各不相同,其中______属软实时应用：A．机器人 B．打印机C．汽车刹车控制 D．电梯3．IP集成复用技术是建立在芯核（CORE）基础上的，所谓固核是指______.A．是一种可综合的包含具体结构信息的代码，是逻辑综合后的描述,B．以硬件描述语言描述的代码，可根据具体的半导体工艺重新综合C．经物理综合后的可直接用于制作的描述D．IP核代码以固件形式置于ROM中4．当前,嵌入式系统软件开发的变化很大,但______并非正确的描述.A．硬件接口的复杂化﹑多样化﹑网络化B．开发用主机必需与网络连结C．引入实时多任务操作系统D．硬件设计开发的同时，需要同时进行应用软件包的开发5．提高系统实时性能有多种方式, 以下方式中______是错误的A．尽量采用软件处理B．采用高实时处理性能的微处理器C．采用基于实时操作系统的多线程程序D．采用并行处理机制6．使用系统级语言可对系统参数、软硬件分割、系统预期性能进行仿真评价,_____不属于系统级设计语言.A．SystemVerilog。
B．SpecCC．System C D．C#7．SoC芯片是一种超大规模集成电路，芯片内集成了几乎整台计算机的逻辑电路, 关于SoC设计的描述中,错误的是______A．对庞大规模的SoC芯片采用晶体管级及门级的设计是不合适的B．过去使用硬件描述语言进行RTL寄存器-传输级描述，记叙硬件结构,现已不用.C．生成VLSI制造工艺所需的一组芯片版面掩膜图由多边形编辑器自动制作，D．System C是C++的扩充语言，对模块内软硬件可作统一的描述,是一种ESL语言8．一款结构为RISC+DSP的SoC芯片,集成ARM11内核和C54x DSP,属于_____芯片系列.A．达芬奇处理器B．钻石处理器C．OMAP处理器 D．凌动处理器9．Windows Embedded可利用开发工具中不包含_________。
A．.NET Compact Framework B．Visual StudioC．Win32 API ， D．RealView10．驻留监控软件调试方式的描述中,错误的是______。
A．是一种成本较低的调试方式B．一般在硬件稳定之前即可进行应用软件的调试C．ARM公司的Angel就是该类软件 D．不能对程序的全速运行进行完全仿真11． JTAG仿真器的一端与目标板相连，另一端则与主机的调试环境相连。
它与主机的连接方式通常很少用________。
A．网口方式。
B JTAGC．并口 D．USB12．调试工具的任务是使计算机系统看不见的信息成为可视。
ICE（在线仿真器）是很强的调试工具, 从各类ICE的功能比较来看,由强到弱的排列为______,。
A．ROM-ICE, 执行跟踪JTAG-ICE, JTAG-ICE, FULL-ICE,B．执行跟踪JTAG-ICE , FULL-ICE, JTAG-ICE, ROM-ICE,C．FULL-ICE, 执行跟踪JTAG-ICE , JTAG-ICE, ROM-ICE,D．JTAG-ICE, FULL-ICE, 执行跟踪JTAG-ICE , ROM-ICE13．用于在目标机完成前的软硬件测评,能测试到所有的软件程序,与目标机构成最接近的评价板是________。
A．软件评价板 B．专用评价板C．标准评价板 D．CPU评价板14．Windows Embedded 嵌入式操作系统特长和用途的描述中错误的是_______。
A．WindowsCE是WindowsNT或WindowsXP的一部份或缩减版本B．Windows Mobile平台构建于微软的Windows CE系列操作系统之上C．Windows XP Embedded是Windows XP面向嵌入式系统构筑的构件化版本D．XP Embedded只用于x86架构处理器.15．Linux 操作系统正在嵌入式开发领域稳步发展，Linux 操作系统描述中错误的是________。
A．Linux可以随意地配置,不需要任何的许可证。
B．实时可靠性是嵌入式应用较为普遍的要求, Linux 2.6 已是一个真正的硬实时操作系统C．免费下载的Linux内核存在非专有性、稳定性等问题。
D．Linux的兼容性较差，特别是在与PC的互通性比较差。
16．在实时操作系统中, ,为较好地解决优先级倒置的问题。
引入了_________机制A．信号量机制 B．优先级顶置协议C．基于优先级的调度 D．刷新其进程控制块的相关内容17．嵌入式软件开发中,对BSP板级支持包开发的描述中错误的是______。
A．编写BSP必须对CPU目标系统的硬件以及应用软件等有全面而深入的了解。
B．BSP功能与PC机的BIOS相同C．引导软件Bootloader属于BSP的一部分D．BSP开发处于整个嵌入式开发的前期，是系统应用程序能够正常运行的保证18．常用嵌入式系统开发平台中, 用于开发高可靠性的硬实时系统, 功能最强的是________。
A．HEW集成开发环境 B．微软开发平台Platform BuilderC．Wind River Workbench集成开发环境 D．ARM的RealView19．嵌入式系统开发中使用的嵌入式语言描述中,错误的是_______。
A．要求嵌入式语言具备较强的硬件直接操作能力B．C/C++依然是实时系统设计所采用的主要语言C．面向嵌入式系统的Java应用已超越C语言D．在应用系统的程序设计中，支持C/C++与汇编语言的混合编程20．嵌入式系统编程建立在特定的硬件平台上，势必要求其编程语言具备较强的硬件直接操作能力按实际应用的频度排列,为________。
A．C,C++,JAVA VB, B．C, VB, C++, JAVAC．JAVA C, VB, C++, D．C, VB, JAVA , C++21.嵌入式数据库系统的特性的描述中错误的是________。
A. 要考虑存储器容量的要求B. 需要提供充分的安全性保证。
C. 采用某种数据复制模式（上载、下载或混合方式），与服务器数据库进行映射，D. 对存取权限的控制并不严格22 嵌入式系统开发中进行软硬件切分设计时，可不必考虑的是_______.A. 响应时间B. 开发成本C. 产品价格D. 技术的先进性23 我国研发的龙芯2号处理器芯片采用的是__________指令架构A. 64位MIPSB. 32位MIPSC. ARM V6D.Coldfire V524. 关于无线宽带技术的描述中,错误的是______A. 室内高速无线通信PAN标准为IEEE 802.15.B. 无线局域网WLAN标准为IEEE 802.11又称WiMediaC. 无线广域网WAN就是手机通信的移动电话网D. 无线城域网MAN采用IEEE 802.16.WiMAX标准。
25 使用普通双绞线，单条网络线路可以连接到100多个节点,传输速率可达到1Mbps,有极高的可靠性和实时性,在汽车、电梯行业，工业控制等行业得到了广泛的应用的总线是_______。
A．SPI B．UARTC．CAN D．I2C三、填空题（共15题,每题1分,计15分）1．具备ARM V6体系结构,带JAVA加速和DSP功能的处理器软核,其型号可能是 ________ 2．嵌入式操作系统的多任务环境相当于多人为一个目标而进行作业，之间必然会发生共有资源使用时的冲突，为了解决共享资源的互斥访问，需要用________来处理3．嵌入式系统的开发要经历处理机体系结构设计﹑硬件子系统设计﹑软硬件平台集成以及________等多个阶段才能完成。
4．根据软件的总体结构编写程序，同时采用各种调试手段，找出程序的各种语法和逻辑错误，最后应使各功能程序________。
5．Windows CE开发平台Platform Builder的结构,它由设备进入﹑________和应用开发三部分组成。
6．综合开发环境包含综合开发工具﹑调试工具﹑________﹑实时OS和中间件及语言系统；7. Workbench基于目前广泛应用的________的开放系统开发框架，能够提供与第三方和专用内部工具的无缝连接。
8．对程序在测试中发现的错误作出修正的作业也通称调试,主要要求解决信息的________。
9．仿真在嵌入式系统开发中可给系统开发者带来集成硬件和软件所需的________和可视性。
10．在开发基于ARM Linux的系统时，用户可以使用工具是________.11. 嵌入式数据库可分为________型和In Prosess型两类12J2ME Configuration规定了Configuration（配置）和Profile（框架）结构,其中适用于手机应用的是________框架13. 汇编语言主要出现在________文件中, 这些汇编指令是系统初始化硬件用的.14. 由IBM开发的用于游戏机及电视的功能强大的多核处理器是________15具备现场可重编程特性的系统级芯片，称为PSoC或________四. 实践题（共5题,每题3分,计15分）判断题1．实验中，PC计算机用命令arm-linux-gcc –o hello hello.c 产生的目标代码可以在PC计算机运行。