试题与答案

轨道电路又称轨道的()检测装置。A、空闲和占用 B、有车和无车 C、正常和故障 D、稳态和

题型:单项选择题

题目:

轨道电路又称轨道的()检测装置。

A、空闲和占用

B、有车和无车

C、正常和故障

D、稳态和动态

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A

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