单项选择题

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

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单项选择题

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

单项选择题

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

A.Bunkering
B.High winds
C.Potable water spill on deck

单项选择题

During transfer operations，a quantity of propylamine spills on deck. According to the Chemical Data Guide，the correct procedure would be to（）.

A.immediately flush the spill with large quantities of fresh water
B.cover the contaminated surface with soda-ash-soaked lime solution
C.add sodium bisulfate on the contaminated surface and spray it down with water
D.move to a position upwind of the spill and allow the product to boil off