题目内容

按照检修周期和检修内容的不同,可以将机车检修分为辅修、、中修、4级。

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现行的机车乘务制度可以归纳为、两类。

Questioning the referee is nothing new: it's an intrinsic part of most organized sports, high or low

A. internal
B. innate
C important
D. old

电力机车按照传动方式不同分为直流传动和____传动电力机车。

Back in 2002, repeated errors during the Cup's knockout round prodded FIFA officials to officially deny rumors that the miscall were part of a plot to assist co-host South Korea advance towards the final

A. lead
B. call or
C. require
D. urge