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【判断题】
遇开放的出站(进路)信号机突然关闭时，司机应立即采取停车措施，并使用列车无线调度通信设备报告车站值班员或列车调度员。如列车停车后已越过关闭的信号机，在半自动闭塞区间对越过出站信号机列车，应使列车退回发车线重新办理发车。如因故无法退回列车头部越过出站信号机的规定办理列车出发，并发给司机。A.
正确
B.
错误
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