【单选题】
交流主汇流条正常由谁供电？___
A. 交流汇流条1；
B. 交流汇流条2；
C. 应急发电机。
D.
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答案
C
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相关试题
【单选题】
如果机上所有的发电机都失效、冲压空气涡轮（RAT）放出、应急发电机可用，当起落架放下时，应急发电机（），（）向主汇流条供电。___
A. 开始工作电瓶；
B. 开始工作静变流机；
C. 不再工作电瓶。
D.
【单选题】
如果两个BTC都打开会是什么情形？___
A. PU发电机向交流电汇流条1供电而外电源向交流电汇流条2供电；
B. APU发电机向交流电汇流条1供电而发电机2向交流电汇流条2供电；
C. 发电机1向交流电汇流条1供电而发电机2向交流电汇流条2供电。
D.
【单选题】
如果两个BTC都是闭合的，会是什么情形？___
A. 发电机1向交流电汇流条1供电而发电机2向交流电汇流条2供电；
B. APU发电机或者外电源或者一台发电机向交流电汇流条1和交流电汇流条2供电；
C. APU发电机向交流电汇流条1供电而外电源向交流电汇流条2供电。
D.
【单选题】
在地面，飞机未通电情况下（COLDAIRCRAFT），按压冲压空气涡轮或应急发电机人工打开（RAT&EMERGENMANON）按钮会使发生什么？___
A. 冲压空气涡轮放出来；
B. 什么也不会发生；
C. 应急发电机工作。
D.
【单选题】
直流电是由变压整流器1和变压整流器2（TR1和TR2）提供的，所有的变压整流器的最大输出为：___
A. 200A28V直流；
B. 180A28V直流；
C. 160A28V直流。
D.
【单选题】
APU发电机性能参数___
A. 90KVA，115V三相交流电，400HZ
B. 90KVA，115V单相交流电，400HZ
C. 5KVA，115V三相交流电，400HZ
D. 90KVA，115V三相交流电，50HZ
【单选题】
在紧急的情况下，应急马达发电机能向飞机提供（）的电源。___
A. 5KVA，115/200V，三相，400HZ
B. 500KVA，115/200V，三相，400HZ
C. 55KVA，115/200V，单相，400HZ
D. 5KVA，220/380V，三相，400HZ
【单选题】
主发电机电门位于（），其作用是（）。___
A. 驾驶舱头顶板上的35VU电源控制面板上；人工控制相应发电机的工作，向相应的电源网络提供或切断电能
B. 驾驶舱头顶板上的35VU电源控制面板上；仅仅用于相应发电机的应急切断
C. 驾驶舱头顶板上的35VU电源控制面板上；人工控制相应发电机的工作，向相应的电源网络提供或切断应急电源
D. 驾驶舱头顶板上的50VU维护面板上；仅仅用于相应发电机的应急切断
【单选题】
DC电源系统中包括有（）台主电瓶，安装在：飞机右侧电子舱内___
A. 两台；飞机左侧电子舱内
B. 两台；飞机右侧电子舱内
C. 一台；飞机左侧电子舱内
D. 一台；飞机右侧电子舱内
【单选题】
电源系统中，发动机通过（）将变化的转速转换为恒定的速度，并驱动发电机工作___
A. 附件齿轮箱
B. 速度调节器
C. 附件齿轮箱和IDG中的CSD（恒速驱动装置）
D. IDG（整体驱动发电机）
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【单选题】
21.—Why not take ____ umbrella with the sign “Made in China”? It is useful.
—What _______ good advice it is!
A. an; a B. a; a C. an; \ D. \; a
A. A
B. B
C. C
D. D
【单选题】
22. —Do you know the boy________ is sitting next to Peter?
— Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; ninth C. /; ninth D. which; ninth
A. A
B. B
C. C
D. D
【单选题】
23. It was dark, ______ I couldnt see what was happening.
A. or B. though C. but D. so
A. A
B. B
C. C
D. D
【单选题】
24.—You can use MSN to talk with Vivien on the Internet.
—I know. But can you tell me ________?
A. what I can use it B. when I can use it
C. why can I use it D. how can I use it
A. A
B. B
C. C
D. D
【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
To learn about different styles of school uniform.
A. What B. Where C. Which D. Why
A. A
B. B
C. C
D. D
【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
A．England． B．France． C．America． D．China．
A. A
B. B
C. C
D. D
【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
A．He cares more about a flower and a sheep．
B．He meets many more strange adults on other planets．
C．He realizes his love for the rose and he goes back to his planet．
D．He discovers interesting things such as a snake, other roses and a fox
A. A
B. B
C. C
D. D
【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
A．the adult world B．the planet B -612
C．a rose and a fox D．the adventure of a young prince
A. A
B. B
C. C
D. D
【单选题】
( ) 29. What is the writer's main purpose（目的）in writing this passage？
A．To tell the readers his life story．
B．To tell people what kind of person his father was．
C．To tell the readers what present he got from his father．
D． To let people know how poor he was．
A. A
B. B
C. C
D. D
【单选题】
( ) 30. Why did the father not ask his son not to do this and do that？
A．Because he felt quite confident of his son．
B．Because he was born from a poor family．
C．Because he was a man of few words．
D．Because he didn't want to be much too strict with his son．
A. A
B. B
C. C
D. D
【单选题】
( ) 31. What would someone learn from this passage？
A．How to live by oneself． B．How to stand on one's own feet．
C．What a good father should do． D．What the self-important is like．
A. A
B. B
C. C
D. D
【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage？
A．闲暇时光 B．学费 C．精神空虚 D．经济不足
A. A
B. B
C. C
D. D
【单选题】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
A. She had seven tickets.
B. She hoped to please others.
C. She knew the car drivers well.
D. She wanted to show kindness.
A. A
B. B
C. C
D. D
【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
A. thought it was beautifully written
B. wanted to know what it really meant
C. decided to write it on a warehouse wall
D. wanted her husband to put it up in the classroom
A. A
B. B
C. C
D. D
【单选题】
( ) 35. Who came up with the phrase according to the passage?
A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
A. A
B. B
C. C
D. S
【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
D. People who receive kindness are likely to pay it back to the giver.
A. A
B. B
C. C
D. D
【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
A. A
B. B
C. C
D. D
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
A. A
B. B
C. C
D. D
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
C. chemicals and other materials D. people's building a dam across a river
A. A
B. B
C. C
D. D
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
A. A
B. B
C. C
D. D
【单选题】
) 1. Even Tony’s six-year-old son asked him ______ smoking.
A. stops B. stopped C. to stop D. stopping
A. A
B. B
C. C
D. D
【单选题】
2.—What do you think of the lecture of Li Yang’s Crazy English?
— I think it’s _______ , but someone thinks it’s much too ________.
A. wonderful enough; bored B. enough wonderful; boring
C. enough wonderful; bored D. wonderful enough; boring
A. A
B. B
C. C
D. D
【单选题】
3.—He didn’t go to the lecture this morning, did he?
— _____ ．Though he was not feeling very well．
A. No, he didnt B. Yes; he did C. No, he did D. Yes, he didnt
A. A
B. B
C. C
D. D
【单选题】
4. If you read a lot, your life ______ full of pleasure.
A. will be B. is C. be D. was
A. A
B. B
C. C
D. D
【单选题】
5. The black bag _________ be Annas. She has a blue one.
A. should B. cant C. wouldnt D. could
A. A
B. B
C. C
D. D
【单选题】
6. Susan, why are you still here? They are all ready to start.
Im sorry, but I _________ when to start.
A. dont tell B. wasnt told C. didnt tell D. havent told
A. A
B. B
C. C
D. D
【单选题】
7.—Why dont you choose the red tie?
—For me, it doesn’t _____ my shirt very well．
A. fix B. accept C. compare D. match
A. A
B. B
C. C
D. D
【单选题】
8. — Could you tell me ______? I must find him．
— Sorry．I don’t know．But he was here just now．
A. where Tom was B. where Tom is
C. where has Tom gone D. where can I find Tom
A. A
B. B
C. C
D. D
【单选题】
9. —What did Mr Green say to you?
— What a heavy rain! How did you come here? He asked________.
A. at all B. in fact C. in surprise D. as a result
A. A
B. B
C. C
D. D
【单选题】
10. I often see Tom on the playground．When I passed the playground yesterday, I saw him ．
A. play; playing B. to play; play C. playing; to play D. playing; play
A. A
B. B
C. C
D. D
【单选题】
11. — Mum, could I have ____________ to drink?
— Oh, dear．You can only drink some water．There is _________ in the kitchen．
A. anything; else something B. anything; something else
C. something; else nothing D. something; nothing else
A. A
B. B
C. C
D. D
【单选题】
12. We all know that learning a foreign language _______ time and effort.
A. requires B. reduces C. removes D. repeats
A. A
B. B
C. C
D. D
【单选题】
13. Her son __________ Coke, but now he __________ milk．
A. is used to drinking; used to drink B. used to drink; uses to drink
C. used to drink; is used to drinking D. is used to drink; is drinking
A. A
B. B
C. C
D. D
【单选题】
14. I don’t know the teacher is talking with Miss Wang．
A. what B. whom C. who D. which
A. A
B. B
C. C
D. D
【单选题】
15.Millie does __________ that many people are thankful to her．
A. such an important and helpful job B. so important and helpful work
C. a very important and helpful job D. such an important and helpful work
A. A
B. B
C. C
D. D
【单选题】
16. I think eating more vegetables is good _______ our health.
—Yes, I agree _______ you.
A. at, to B. for, with C. to, to D. for, to
A. A
B. B
C. C
D. D
【单选题】
17. I often go on holiday with my parents _____ summer.
A. in B. at C. on D. of
A. A
B. B
C. C
D. D
【单选题】
18. I called you at 4:00 yesterday afternoon, but nobody answered.
Sorry, I ______ with my friends at that time.
A. had swum B. swam C. would swim D. was swimming
A. A
B. B
C. C
D. D
【单选题】
19.––Who is on the playground? ---__________．
A. Never B. None C. No one D. A lot
A. A
B. B
C. C
D. D
【单选题】
20. The schoolboy ______ a blind man cross the street yesterday.
A. helps B. helped C. will help D. has helped
A. A
B. B
C. C
D. D
