道岔尖轨与基本轨之间的顶铁离缝大于（）毫米应及时修理。A.0.2_爱下问搜题

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问题单项选择题

道岔尖轨与基本轨之间的顶铁离缝大于（）毫米应及时修理。

A.0.2

B.0.4

C.0.3

D.0.5

答案

参考答案：D

选择题

108. Dr. Manette had been mentally ____ by his long years alone in prison and his hair had turned white.

A．disturbed

B．troubled

C．worried

D．Damaged

单项选择题

机架式设备如机架式集线器、机架式交换机、机架式路由器的宽度为（）。

A.19英寸

B.20英寸

C.21英寸

D.29英寸