单项选择题
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?（）
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（）.
单项选择题 During the winter months，the southeast trade winds are（）.