单项选择题
PULL THE STRINGS AROUND YOUR WAIST AND TIE IN FRONT. This description is likely used in（）.
A.fire fighting operations B.salvage operations C.cargo operations D.manoeuvering operations
单项选择题 Prior to lowering the lifeboat，the most important item to check is the（）.
单项选择题 On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.
单项选择题 On a passenger vessel，the vessel’s name must appear on（）.
