2.  >>  河南成教 / 交通设计
 河南成教 / 交通设计
正确率：100%

闭塞是为了保障列车在区间内运行安全，当列车向区间运行时，需要满足验证区间空闲，确认对方站没有办理向该区间发车的进路以及（）。

A.自动回复闭塞

B.本站发车信号开放

C.自动确认列车到达

D.邻站接车信号开放





  积分
交通设计
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