單項選擇題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


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1.單項選擇題Each crewmember has an assigned firefighting station. This assignment is shown on the（）.

A.fire fighting plan
B.shipping articles
C.Certificate of Inspection
D.muster list

2.單項選擇題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

3.單項選擇題After using a Halon extinguisher，it should be（）.

A.put back in service if more than 50% of the charge remains
B.repainted
C.discarded
D.recharged

4.單項選擇題After using a C02 portable extinguisher，it should be（）.

A.put back in service if some C02 remains
B.hydrostatically tested
C.retagged
D.recharged

5.單項選擇題Accumulations of oily rags should be（）.

A.kept in nonmetal containers
B.discarded as soon as possible
C.cleaned thoroughly for reuse
D.kept in the paint locker