航海英语消防用语单项选择题每日一练(2019.01.06)

单项选择题
On a ship，a fire drill shall be conducted once every（）.
A.week
B.month
C.crew change
D.other week
单项选择题
How long must the records of tests and inspections of fire fighting equipment on board a ship be retained on board?（）
A.6 months
B.1 year
C.3 years
D.Until the next inspection for certification
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
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
The atmosphere in a tank is too lean if it is（）.
A.incapable of supporting combustion because the hydrocarbon content is below the LFL (Lower Flammable Limit)
B.capable of supporting combustion because the hydrocarbon content is above the UFL (Upper Flammable Limit)
C.capable of supporting a fire once started
D.not safe for ballasting