问题
单项选择题
调车机车由峰顶驶往到达场挂车并推至峰顶的调车钩称为（）。
A.推送钩
B.溜放钩
C.挂车钩
D.空钩
答案
参考答案：C
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调车机车由峰顶驶往到达场挂车并推至峰顶的调车钩称为（）。
A.推送钩
B.溜放钩
C.挂车钩
D.空钩
参考答案：C
| 完形填空。 |
| Jenny and Bruce are good friends. They 1 from Canada. They speak English. They can speak a little Chinese.They 2 to play with their dolls. Jenny likes English very much. Bruce likes math. They 3 in Beijing, China now. The weather in Biejing is very good in October. They 4 to school five days a week (周). They like to play games (游戏) 5 Thursdays. They 6 go to school on Saturdays or Sundays. They have two Chinese friends. 7 names are Li Ming and Liu Dan. They are 8 the same class. They like their school. They like China. They say,"The 9 people (人民) are very kind (友好). The food is good, 10 ." |
| ( )1.A. come ( )2.A. can ( )3.A. do ( )4.A. goes ( )5.A. at ( )6.A. do ( )7.A. His ( )8.A. to ( )9.A. Chinese ( )10.A. much | B. is B. are B. are B. go B. in B. don't B. Their B. in B. China B. very | C. live C. be C. don't C. going C. on C. doesn't C. They C. of C. China's C. nice | D. aren't D. like D. be D. are going D. for D. aren't D. Her D. for D. Chinese's D. too |
切缘与
平面的关系为（）