A lifeboat with a self-contained air support system when proceeding with all entrances and openings closed, the air in the lifeboat remains safe and breathable and the engine runs normally for a period of more than min._( ) _

A lifeboat with a self-contained air support system when proceeding with all entrances and openings closed, the air in the lifeboat remains safe and breathable and the engine runs normally for a period of more than min._( ) _

分类：港口国监督题库
发表：2023年01月12日 16时01分10秒
作者： admin
阅读： (9)

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A lifeboat with a self-contained air support system when proceeding with all entrances and openings closed, the air in the lifeboat remains safe and breathable and the engine runs normally for a period of more than min._( ) _

A.5min
B.10min
C.20min
D.30min

正确答案B

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