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A self-contained breathing apparatus is used to().

发布日期:2021-03-22

A self-contained breathing apparatus is used to().
A

make underwater repairs to barges

B

determine if the air in a tank is safe for men

C

enter areas that may contain dangerous fumes or lack oxygen

D

resuscitate an unconscious person

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水路交通运输技能考试

海船船员考试

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