斜井信号工在中部车场操作信号时,严禁站在()处。
A.直道
B.弯道
C.道岔
参考答案:B
—Can you tell me _____ it takes us to get there?
—Of course I do. [ ]
A. how many
B. how much
C. how long
MEH运行方式:(),(),(),()。