单项选择题
A.shorter than the rowing oars B.the same length as the rowing oars C.longer than the rowing oars D.unrelated to the length of the rowing oars
The grab rail of a metal lifeboat is normally located（）...
单项选择题The grab rail of a metal lifeboat is normally located（）.
A.along the turn of the bilge B.along each side of the keel C.near the top of the gunwale D.at the bow and at the stern
The governor brake shall be capable of controlling the ...
单项选择题The governor brake shall be capable of controlling the speed of lowering a fully equipped lifeboat with its complement of persons on board at（）.
A.safe speed only specified B.not less than 120 feet per minute C.not more than 120 feet per minute D.not more than 90 feet per minute
The first treatment given to a person overcome by benze...
单项选择题The first treatment given to a person overcome by benzene vapor should be to（）.
A.remove them to fresh air B.flush their face with water for about 5 minutes C.stand them up and walk them around D.remove their clothing and wrap them in blankets
