试题与答案

使用自动闭塞法行车时,遇发车进路信号机发生故障时发出列车,行车凭证为()。A、路票

题型:单项选择题

题目:

使用自动闭塞法行车时,遇发车进路信号机发生故障时发出列车,行车凭证为()。

A、路票

B、调度命令

C、绿色手信号

D、绿色许可证

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D

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