单项选择题

Which one is not important for your safety on board ship?（）

A.know where the lifejacket is stowed
B.know where the life-saving craft are fitted on the ship
C.know the escape routes
D.Good professional knowledge

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单项选择题

Which one might be used most likely in case of a fire?（）

A.lifejacket
B.SCBA
C.lifeboat
D.torch

单项选择题

Which one is not the personal safety equipment?（）

A.Life jackets
B.Survival at Sea manual
C.lifeboat
D.torch

单项选择题

Water is a very effective fire extinguishing agent because it（）

A.will remove all the toxic fumes from the air
B.has the greatest cooling ability
C.will leave no harmful residue
D.completely removes combustible vapors from the air