单项选择题
When retrieving the survival craft，the winch operator should stop the winch and check（）.
A.that all personnel are seated in the craft B.that the cable has not jumped any grooves on the drum C.which way the wind is blowing D.the hydraulic fluid level before lifting
单项选择题 When jumping into water upon which there is an oil-fire，you should（）.
单项选择题 When joining a vessel，do not forget personal documents and your spectacles，and（）if necessary.
单项选择题 When evacuating a seaman by helicopter lift，which statement is TRUE?（）
