航海英语消防用语单项选择题每日一练(2019.01.20)

单项选择题
An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.
A.lack of toxicity
B.the multipurpose extinguishing ability
C.burn-back protection
D.cooling ability
单项选择题
Lifesaving regulations require that a fire drill include（）.
A.starting the fire pumps
B.checking the operation of watertight doors
C.checking arrangements for abandon ship
D.All of the above
单项选择题
One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that（）.
A.it can break down under high heat and emit noxious fumes
B.it will decompose under prolonged storage and lose its effectiveness
C.fire has been known to flash back over the surface of an oil fire
D.it is ineffective in fighting fires in high-voltage electrical equipment
单项选择题
The bilge pump on a fishing vessel（）.
A.must be fixed if the vessel exceeds 12 meters in length
B.may be used as a fire pump
C.must be portable if there are more than 4 watertight compartments
D.must be capable of pumping at least 450 gpm
单项选择题
Ordnance exercise is（）.
A.Naval firing practice
B.Fire drills
C.Crew drills
D.Survival drills