How long must the records of tests and inspections of fire fighting equipment on board a ship be retained on board?（）<br>A:6 months<br>B:1 year<br>C:3 years<br>D:Until the next inspection for certification

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

出自：海船船员证

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