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To safeguard the operator and other personnel working on or near a hoisting operation which of the following precautions should be observed?（）
A:Keep a load on the hoist until all personnel are finished working
B:Set the load on a movable dolly when transportation may be needed
C:Have one man keep a hand on the load to steady it
D:Insure that the lifting gear capacity is not exceeded

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出自：海船船员证

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