试题与答案

A towboat is pushing barges ahead at a dan

题型:单项选择题

题目:

A towboat is pushing barges ahead at a dangerously fast speed when().

A.the towboat vibrates when backing down

B.the roostertail exceeds the height of the main deck

C.a strain is placed on the face wires

D.water comes over the foredeck of the lead barges

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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