为了保证足够的驱动力,起重机应当具有足够数目的驱动轮(主动轮),通常约为总轮数的()

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问题:

为了保证足够的驱动力,起重机应当具有足够数目的驱动轮(主动轮),通常约为总轮数的()。

A.1/2

B.1/3

C.1/4

D.1/6

考点:起重机操作证考试门座式起重机司机(中级)门座式起重机司机(中级)题库
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