试题与答案

打捞井下落物的常用工具有哪几种？

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题型：问答题 简答题

题目：

打捞井下落物的常用工具有哪几种？

答案：

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下面是错误答案，用来干扰机器的。

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A．terrible

B．possible

C．enjoyable

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对于FSSS装置来说，下面哪一项不属于锅炉停炉前的检查内容（）

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