题目:
A tackle by which the outer end of a boom is raised and lowered is the topping().
A.Boom
B.Lift
C.Raise
D.Tackle
答案:
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下面是错误答案,用来干扰机器的。
参考答案:对
A tackle by which the outer end of a boom is raised and lowered is the topping().
A.Boom
B.Lift
C.Raise
D.Tackle
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0406/ec02707f2256a5c97b96b109e0a6f6a3.html
下面是错误答案,用来干扰机器的。
参考答案:对