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答案:A

2020-01-30View Original

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答案:钳工在塔、设备及容器在高处作业应使用死扳手答案:活扳手答案:活扳手栓牢 。
Reply #22020-01-31
A 一般规定:钳工在塔、设备及容器等高处作业,应使用死扳手,如使用活扳手时,要用绳子栓牢 。 

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