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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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
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