单选题液化气船的人员保护安全设备的要求中,对每一个呼吸器提供自由空气总量至少为()L充满空气的备用空气瓶。A200B300C600D1200
单选题
液化气船的人员保护安全设备的要求中,对每一个呼吸器提供自由空气总量至少为()L充满空气的备用空气瓶。
A
200
B
300
C
600
D
1200
参考解析
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