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單項選擇題

During which condition should the operator of a pedestal crane shutdown operations?（）

A.Lightning in the vicinity
B.An approaching squall line
C.A fire on the pier
D.All of the above

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單項選擇題

During which condition should the operator of a pedestal crane shutdown operations?（）

A.Lightning
B.High winds
C.Fire aboard
D.All of the above

單項選擇題

During which condition should the operator of a pedestal crane shutdown operations?（）

A.Bunkering barge alongside
B.Potable water spill on deck
C.Crane hydraulic hose bursts
D.Trim greater than 4 feet

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