【单选题】
波浪型磨耗谷深大于___时，应进行打磨。
A. 0.4mm
B. 0.5mm
C. 0.6mm
D. 0.7mm
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答案
B
解析
暂无解析
相关试题
【单选题】
采用相对式接头的线路两股钢轨接头,在每节轨上相差量一般应不大于3mm，并应前后、左右抵消，在两股钢轨上累计相差量最大不得大于___。
A. 14mm
B. 15mm
C. 16mm
D. 17mm
【单选题】
采用相对式接头的线路两股钢轨接头,在每节轨上相差量一般应不大于___，并应前后、左右抵消，在两股钢轨上累计相差量最大不得大于15mm。
A. 2mm
B. 3mm
C. 4mm
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【单选题】
两尖轨尖端距离小于6m，两尖端处轨距相等时不作递减，不相等时则从___。
A. 右侧为准递减
B. 左侧为准递减
C. 较大轨距向较小轨距均匀递减
D. 较小轨距向较大轨距均匀递减
【单选题】
护轨平直部分轮缘槽如侧向轨距为___，则侧向轮缘槽标准宽度为48mm，容许误差为（+3，-1）mm。
A. 1439mm
B. 1440mm
C. 1441mm
D. 1442mm
【单选题】
各种标志（警冲标除外）应设在钢轨头部外侧不小于2m处。不超过钢轨顶面的标志，可设在距钢轨头部外侧不小于___。
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【单选题】
( ) 33. 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
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【单选题】
( ) 34. Why did the father not ask his son not to do this and do that？
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D．Because he didn't want to be much too strict with his son．
A. A
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( ) 35. What would someone learn from this passage？
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C．What a good father should do． D．What the self-important is like．
A. A
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【单选题】
( ) 36. What may be the proper Chinese for the underlined part in the passage？
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A. A
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【单选题】
( ) 37. The Chinese Yellow Sea Wetlands are in the _______ of China．
A．south B．east C．west D．north
A. A
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【单选题】
( ) 38. Usually the weather in the wetlands is _______．
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( ) 39. The World Wetlands Day is on _______．
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( ) 40. We must protect wetlands because _______．
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) 1. —Is it far from here to the bank?
—Not very, only________．
A. 20 minute’s walk B. 20 minutes walk
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【单选题】
2. — After discussing, the students ________ some good ideas to work on the project.
— Thats great!
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【单选题】
3. Yesterday Tommy walked past my table and ______ my bowls and dishes.
He should be careful next time.
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【单选题】
4.We don’t have enough nurses to look after patients．At least ___ nurses are needed．
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C. C
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【单选题】
5. — Zhao Rui, it’s said that many famous singers will come to Yangzhou on April 18th. How about watching the evening show there?
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【单选题】
6.—Hello! This is Henry Speaking．I’d like to speak to your father．
—Sorry, he has Shanghai．
A. been in B. been to C. come to D. gone to
A. A
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C. C
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【单选题】
7. — It’s difficult for the village children to cross the river for school．
— I think a bridge ______ over the river．
A. was built B. is being built C. has been built D. should be built
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B. B
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【单选题】
8. —Where would you like to go, Jinan or Qufu?
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【单选题】
9 — The documentary A Bite Of China II is quite popular around China recently. How do you like it? ______.
A. I think so B. Pretty good C. Its my pleasure D. All right
A. A
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C. C
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【单选题】
10. There are three English-books on the shelf, but ______ of them is mine.
A. both B. neither C.all D. none
A. A
B. B
C. C
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【单选题】
11. When the parents arrived at the hall, the students _______ their projects.
A. have finish B. finished C. had finished D. are finishing
A. A
B. B
C. C
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【单选题】
12. This week, the _______ seems to change every day: one day is hot; the next day is cold.
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B. B
C. C
D. D
【单选题】
13. He never does his work _______ Mary.
A. as careful as B. so careful as C. carefully as D. as carefully
A. A
B. B
C. C
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【单选题】
14. — Can he jump high?
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B. B
C. C
D. D
【单选题】
15. The shop _____ at 8:00 a．m．and it ________ for ten hours every day．
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C. opens; is open D. opened; opens
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【单选题】
16. —Excuse me, may I use your bicycle? ______ is broken.
Certainly. But remember to return it before lunch.
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A. A
B. B
C. C
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【单选题】
17. Simon, what do I need to take for the hiking?
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A. A
B. B
C. C
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【单选题】
18. Helen ______ to a language school when she was seven.
A. sent B. is sent C. will send D. was sent
A. A
B. B
C. C
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【单选题】
19. — Is this park youve visited recently?
— Yes, it's the most beautiful one Ive ever visited before.
A. that B. the one C. which D. the one which
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B. B
C. C
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【单选题】
20. — Its difficult for the village children to cross the river for school.
— I think a bridge ________ over the river.
A. should be built B. is being built C. has been built D. was built
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B. B
C. C
D. D
【单选题】
21. — Could you tell me when Mr. Li ________ in Huaibei?
— Sure．．When he ________, I’ll call you．
A. arrives; will arrive B. will arrive; will arrive
C. arrives; arrives D. will arrive; arrives
A. A
B. B
C. C
D. D
【单选题】
22.There is ________ 800-metre-long road behind ________ hospital．
A. an; an B. an; the C. a; a D. a; the
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【单选题】
23. — Did you see a girl in yellow pass by just now?
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【单选题】
24.In fact, my parents are not only kind to me, but also strict ________ me.
A. at B. to C. for D. with
A. A
B. B
C. C
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【单选题】
25. The boy_____ a yellow sweater can_____ himself now．
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A. A
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【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?
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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 _________．
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A. A
B. B
C. C
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【单选题】
( ) 29. When a baseball player hits the ball, he must ______ to get a point.
A. run to each base freely
B. touch the home plate first
C. touch all the bases with his hands
D. run to each base in order and touch it with his foot
A. A
B. B
C. C
D. D
【单选题】
( ) 30. When was the importance of touching all the bases shown?
A. Before the baseball rules made.
B. At the end of the 1974 baseball seasons.
C. At the start of the 1974 baseball seasons.
D. In the second week of 1974.
A. A
B. B
C. C
D. D
【单选题】
( ) 31. Who hit home run number 715?
A. Babe Ruth. B. Hank Aaron. C. Babe Ruth’s partner. D. Hank Aaron’s friend.
A. A
B. B
C. C
D. D
【单选题】
( ) 32. What does the expression “to touch all bases” mean?
A. To try your best to set a new record.
B. To get a chance to be the greatest hitter.
C. To do what is needed to finish an activity.
D. To solve the problems successfully.
A. A
B. B
C. C
D. D
