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【单选题】
在有接触网终点的线路上调车时,电力机车距接触网终点标应有(A)的安全距离。A.
10m
B.
15m
C.
20m
D.
30m
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举一反三
【简答题】Customers in restaurants behave differently. Here are three stories about their funny and disgusting behavior. 1. One lunchtime, I was waiting on a man who was dining alone. He looked like a typic...
【单选题】Only when he got on the train _________ that he had left his mobile phone at home．
A.
he realized
B.
he had realized
C.
had he realized
D.
did he realize
【单选题】Not only _the telephone number, but he had also forgotten his mobile phone.
A.
he forget
B.
did he forget
C.
he had forgotten
D.
had he forgotten
【简答题】He had his phone ________________ (steal) yesterday.
【单选题】挡土墙墙后填土的内摩擦角 j ,对主动土压力的大小有何影响? ()
A.
j 越大，主动土压力越大
B.
j 越大，主动土压力越小
C.
j 的大小对土压力无影响
D.
以上全错
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