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
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相关考题
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单项选择题
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 -
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
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
