试题与答案

What is meant by the term TOPPING THE BOOM

题型:单项选择题

题目:

What is meant by the term TOPPING THE BOOM?()

A.Lowering the boom

B.Raising the boom

C.Spotting the boom over the deck

D.Swinging the boom athwartships

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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