单项选择题
A.You must ventilate constantly and vigorously to combat ship sweat A.Press up the slack No.1 starboard double bottom tank
B.You should ventilate; there is little danger of ship sweat, but a possibility of cargo sweat
C.There is danger of heavy cargo sweat if you ventilate
D.There is little danger of any sweat problem
单项选择题 Your vessel is listening 4°to port and has a short rolling period. There is loose firefighting water in the hull. The ship is trimmed down by th end with one foot of freeboard at the bow. Which action should you take first?（）
单项选择题 Your vessel is listening because of a negative GM. To lower G below M, you should（）.
单项选择题 Your vessel is loaded with nonhygroscopic cargoes and is going from a cold to a warm climate. You should（）.