接好地线，保证用电安全。
发电机、变压器必需设在施工现场边角处，并设围栏和警示标志，保证用电安全。
Generator, transformer necessary construction site in corners, and a fence and warning marks, ensure safety.
为规范操作者正确使用电动葫芦，保证其安全运行，特制定本作业指导书。
This instruction is formulated to standardize the correct operation of the electric hoist and ensure its safe running.
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