2020年广西桂林理工大学矿床学考研真题

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2020年广西桂林理工大学电路分析基础考研真题

2020年广西桂林理工大学电路分析基础考研真题一、选择题（每小题5 分共80 分）1、电路的暂态过程进行的快慢与时间常数T有关，T越大，暂态过程需要的时间就 ________________A、越长B、越短C、不变D、无法确定2、在正弦交流电路中，功率表可以测量电路的_____________________ 功率。

A、瞬时功率B、有功功率C、无功功率D、视在功率3、已知正弦电压为u = 20A/2COS（314t + 45?）V ,其相量表达式为（）A、U m = 20辰45°V；B、Um = 20Z45?V；C、U = 20Z45?V；D、U = 20Z45?V4、如图4所示电路，三相电源线电压为380V,若三相负载对称，当电流i A的大小为3A时,5、上面图5所示的正弦交流电路中，已知电压表Vi=8V, V2=3V, V3=9V,则电压表V的读数为_______________ V。

A、 20VB、 14VC、 10VD、 8V6、实验室中用交流电压表测量的电压值是________________A、瞬时值B、有效值C、最大值D、平均值电流i AB的大小为-c、V3A D、3^3A7、下面图7所示电路中A点的电位V A为A、5VB、7VC、3Vm8、上面图8所示电路化简成一个实际电压源模型，则其中U S和R分别为____________________9、如下图9所示电路中，当Is=10A时，U=2V,若Is=—100A时，U为A、10VB、-20VC、20VD、不能确定10、如上图10所示的三相四线制照明电路，各相负载电阻不对称。

如果中性线在“X”处断开，后果是OA、各相电灯中电流均为零；B、各相电灯中电流不变；C、各相电灯电压将重新分配，可能高于或低于额定值，有的不能正常发光，有的可能烧坏灯丝。

11、如下图11所示电路，三个电流源发出的总电功率是A、186WB、216WC、6WD、66W12、如下图12所示的有向图，树枝数和独立回路数分别是A、3 和 3B、4 和 3C、5 和 4D、6 和 313、如上图13所示电路，当电路发生谐振时，电流大小为____________________ 。

2020年广西桂林理工大学结构力学考研真题A卷

2020年广西桂林理工大学结构力学考研真题A卷
考生注意：
1
．请将答题写在答卷纸上，写在试卷上视为无效。

2．考试需带三角板或直尺、普通计算器。

一、简答题（共20分）
1．对图1-1、1-2中的杆件系统进行几何组成分析，并写出正确的结果（如果有多余约束，要写出具体的多余约束数量）。

（2分共8分）
图1-2
2．如图1-3所示，判断平面桁架在图示荷载作用下，哪些是零杆，写出来；并计算1、2杆的轴力。

（12分）
图1-3
图1-1
图
4
图 2
二、画出图2梁中
、
、
、剪力
的影响线。

（4
分共16分）
三、不需要写出详细求解过程，作图3结构的弯矩图、剪力图和轴力图。

（共20分）
图 3
四、求出图4梁结构处的竖向位移和处的转角，已知杆件为常数。

（24分）
五、利用对称性简化图5结构，并用力法计算，画出结构的弯矩图。

各杆件的为同一常数。

（25分）
图5
六、用位移法计算图6中刚架，并绘制弯矩图，各杆件的常数。

（20分）
图6
七、已知等截面连续梁各段相对线刚度如图7所示，用力矩分配法计算并绘制其弯矩图。

（注：三个轮次即可，并保留小数点后两位有效数字）（25分）
图7。

桂林理工大学834结构力学2020年考研专业课真题试卷

2020年《结构力学》第1页共2页图
4
桂林理工大学2020年硕士研究生入学考试试题
考试科目代码：834
考试科目名称：结构力学（A 卷）
（总分150分，三小时答完）考生注意：1．请将答题写在答卷纸上，写在试卷上视为无效。

2．考试需带三角板或直尺、普通计算器。

一、简答题（共20分）
1．对图1-1、1-2中的杆件系统进行几何组成分析，并写出正确的结果（如果有多余约束，要写出具体的多余约束数量）。

（2分共8分）
×
4
图1-2
2．如图1-3所示，判断平面桁架在图示荷载作用下，哪些是零杆，写出来；并计算1、2杆的轴力。

（12
分）
图1-3 图2
二、画出图2梁中、、、剪力的影响线。

（4分共16分）
M A M K F RD F QK ×4三、不需要写出详细求解过程，作图3结构的弯矩图、剪力图和轴力图。

（共20
分）图3
四、求出图4梁结构处的竖向位移和处的转角，已知杆件为常数。

（24分）
C A E I 图1-1。

桂林理工大学2020年硕士研究生入学考试试题 211-翻译硕士英语

桂林理工大学2020年硕士研究生入学考试试题考试科目代码：211考试科目名称：翻译硕士英语（总分100分，三小时答完）考生注意：请将答题内容直接写在试题纸上Part I Choose the word or phrase that can replace the underlined part in each sentence without changing its original meaning.（每小题0.5分，共10分）1. I’m awfully sorry to have delayed answering your letter because of pressure of work.A. extendedB. stoppedC. postponedD. changed2. The theatre has been forced to beg for donation in order to keep it running.A.settleB. applyC. lookD. ask3. The fire in the office block was eventually brought under control.A. expectedlyB. finallyC. successfullyD. completely4. Sea snakes inject a poison so strong that it kills a fish instantly.A. effortlesslyB. easilyC. immediatelyD. finally5. When everyone was busy talking I slipped away.A. ran hurriedlyB. fell down on the groundC. left quietlyD. tiptoed6. Marx offered a profound analysis of the economic crisis.A. successfulB. correctC. deepD. final7. He gazed with longing and expectation into the future.A. wonderB. indifferenceC. desireD. curiosity8. The horse relaxed, and the rider slackened the rein.A. tightenedB. untiedC. fastenedD. loosened9. Don’t drag that table across the room, you’ll scratch the floor!A. tearB. pullC. drawD. push10. Mr. Brown is someone all the students look up to.A. missB. respectC. fearD. treat11. Don’t bother your boss with such unimportant matters.A. unworthyB. stupidC. optionalD. petty12. Barack Obama’s victory in the American presidential election was overwhelming.A. importantB. greatC. timelyD. unexpected13. Why are the contents of the next person’s shopping trolley always more alluring than one’s own?A. dissuasiveB. scaryC. attractiveD. constructive14. There is a slight difference in meaning between the two books.A. hugeB. subtleC. moderateD. gigantic15. She gradually perceived that her parents had been right.A. noticedB. knewC. acceptedD. realized16. He hated the war so much that he decided to leave the army for good.A. permanentlyB. for himselfC. for a short whileD. temporarily17. The answer had come to him in a flash.A. afterwardB. very quicklyC. in a glanceD. in a hurry18. The word “Hack” is a term of the technology culture which has come into existence over thepast few decades.A. come into beingB. widely usedC. become rareD. come forward19. The director has confessed himself puzzled by the company’s losses.A. toldB. acknowledgedC. comfortedD. reminded20. It’s downright impossible to finish the task in two days.A. downwardB. possiblyC. completelyD. perfectlyPart II Fill in the blank in each sentence with an appropriate form of the given word in the parenthesis. （每小题1分，共20分）1. This is Jim, my personal _________. (assist)2. Although I was quite sure that she has stolen my wallet, I could not find any__________. (prove)3. Completely exhausted, the soldiers could hardly walk any______. (far)4. Without your _________ he would never have been able to do it. (encourage)5. I haven’t received any pay rise for 3 years; I think all the other ______ have the same experience. (employ)6. The _______ of the money from the cash-box show that somebody in this office is a thief. ( appear)7. When I asked her about where she wanted to hold the meeting, she didn’t express any particular ________(prefer)8. Who can ______me that I’m wrong? (assurance)9. We should work out a global________ to develop our markets. ( strategically)10. After long________, she decided to turn down the job offer. (deliberate)11. She couldn’t stand the _________ and unfriendliness in the office so she decided to resign. ( compete)12. As a typical ______, he never took any noon nap. ( workaholism)13. Everyone among his friends and colleagues knew it _________.(instant)14. He worked himself to death, finally and ________, at 3:00 a.m. Sunday morning. (precise)15. They would depart ________as if leaving the crime scene without calling the police. (reluctance)16. Every house in this area is ________ against fire and theft.(insurance)17. It is _________ that none of them got invitation to the party. ( regret)18. It never _______ to me that he was a two-faced snobbish person. (occurrence)19. The of human species has been a long process. (evolve)20. How often do we__________people on how well they look, or express our appreciation fortheir’ kindness? (complimentary)Part III Explain the underlined part in each sentence in your own words （每小题1分，共10分）1.It’s no wonder that, despite their carefree facade, they are often confused, uncertain and troubled. ___________.2.If our parents didn’t get them for us, we felt our world fall apart. _________3.We slipped away to L.A. to tie the knot. _______4.Given that I’m color-blinded, it’s nearly impossible for me to become a driver. ________5.Conferences and business meetings around the world are held in English, regardless of whether anyone present is a native English speaker. __________6.The door opened and a little girl stood there, peering at me. _________7.In spite of my disease I still drove to and from work each day, with the aid of special equipment installed in my car. _________8.Unfortunately, integrity is in short supply today. _________9.Phil was a Type A, a heart-attack natural. ___________10.It is, in short, an agreeable, easy place to go about one’s business on foot. _______Part IV Fill in each blank with a word or phrase taken from the box. (每小题1分，共10分)1.2.A: Have you heard form Joan?B: No, I got a letter from her - when was it?- Oh, it must have been _____.3.A: Have you read any good books_______?B: Well, I’ve_____ finished the novel borrowed from library.4.Michael left for America in the 1980s. He_____ found a job and got married. It was only ______ that he managed to come back to Europe.5.When my father retires, he will______ move to his country cottage. _______ he will sell his town flat and settle in the country.6.I’ve only seen the mayor________, when he visited the local hospital.7.He’s _______ been working at night.Part V Explain in your own words the following sentences（每小题3分，共30分）1.In the United States we have become so habituated to using the car for everything that it doesn’t occur to us to unfurl our legs and see what those lower limbs can do.________________________________________________________________________________ ________________________________________________________________________________ 2.He had no outside “extracurricular interests,” unless, of course, you think about a monthly golf game that way.________________________________________________________________________________ ________________________________________________________________________________ 3.Popularity was not so important: running with the crowd was no longer a law of survival.________________________________________________________________________________ 4.The god of mirth is paying us back for all those years of thinking fun was everywhere by refusing to come to our party.________________________________________________________________________________ ________________________________________________________________________________ 5.Are all white lies to be avoided at all costs?________________________________________________________________________________ 6.Anything less than a hug may come across as chilliness.________________________________________________________________________________ 7.When you know you are right, you can’t back down.________________________________________________________________________________ 8.Integrity means having a personal standard of morality and ethics that does not sell out to expediency.________________________________________________________________________________ ________________________________________________________________________________ 9.When young, you are apt to be obsessed with your appearance._______________________________________________________________________________ 10.I realized that I was filled to overflowing with self-pity, selfishness, indifference to the needs of others and thoughtlessness.________________________________________________________________________________ ________________________________________________________________________________ Part VI Writing. (每小题20分，共20分)Directions：Write a composition in 250 words with a clear thesis statement and effective supporting arguments.The Virtues of Growing Up。

桂林理工大学851冶金物理化学2020年考研真题

桂林理工大学2020年硕士研究生入学考试试题
考试科目代码：851
考试科目名称：冶金物理化学【A】
（总分150分，三小时答完）
考生注意：1．请将答题写在答卷纸上，写在试卷上视为无效。

2．考试需带计算器用具
一、选择题（每小题2分，共20分）
1.气体在吸附表面上的吸附规律，可用各种吸附等温式来表示，其中应用最广泛的是（）。

A. 朗格缪尔吸附等温式
B. 牛顿吸附等温式
C. 杜菲吸附等温式
D. 焦姆金吸附等温式
2.组元从低浓度区域向高浓度区域扩散的现象，叫（）。

A. “下坡”扩散
B. “下坡”辐射
C. “爬坡”扩散
D. “爬坡”辐射
3.炼钢过程中，碳氧化的气体产物不断从熔池放出，且它们的氧势远低于炉内气相或渣内（FeO）的氧势。

因此，炼钢炉内碳的（）反应难以达到平衡。

A. 化学
B.氧化反应
C. 还原反应
D. 以上都不对
4.脱磷反应在渣钢界面上进行的，脱磷过程化学反应速率很快，主要受（
）所控制。

A. 渣相一侧的传质速率
B. 钢液一侧的传质速率
C. 渣钢的界面化学反应
D. 渣钢两侧的传质速率
5.表示化学反应的反应速率与浓度等参数间的关系式，或浓度与时间等参数间的关系式，称为（）。

A. 热力学方程
B. 化学方程式
C. 速率方程
D. 基元反应
6.下列叙述中，属于麻森模型要点的是（）。

A. 熔渣完全电离，且正、负离子电荷总数相等。

2020年《冶金物理化学》第1页共4页。