The bypass valve on a self-contained breathing device should be opened if（）. -题库考试答案搜索网

The bypass valve on a self-contained breathing device should be opened if（）.

单选题

2022-01-02 03:39

A、you are entering a space containing poisonous vapors
B、you are entering a space containing explosive gases
C、the regulator of the breathing apparatus malfunctions
D、the face piece of the breathing device is too tight

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正确答案

C

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标签：船舶设备名称

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