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（）.
单项选择题 During the winter months，the southeast trade winds are（）.
单项选择题 During the month of October the Sun’s declination is（）.
