单项选择题
A.Carbon dioxide B.Water (stored pressure) C.Foam D.Carbon tetrachloride
Which portable fire extinguisher is normally recharged ...
单项选择题Which portable fire extinguisher is normally recharged in a shore facility?（）
A.Dry chemical (cartridge-operated) B.Water (cartridge-operated) C.Water (pump tank) D.Carbon dioxide
Which item is NOT included in the fireman’s outfit on a...
单项选择题Which item is NOT included in the fireman’s outfit on a cargo vessel?（）
A.Fire ax B.Flashlight C.rigid helmet D.Fresh air breathing apparatus
Which is a disadvantage of Halon as a fire extinguishin...
单项选择题Which is a disadvantage of Halon as a fire extinguishing medium?（）
A.Conducts electricity B.Difficult to store C.Large volume necessary to be effective D.Ineffective in powdered metal fires
