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SCBA is a device worn by firefighters to provide breathable air in an immediately dangerous to life or health atmosphere. Here SCBA means ____ . A. Self Containing Breathing Apparatus B. Self Contained Breathing Apparatus C. Self Contained Breathing Appliance D. Self Containing Breathing Appliance

Aa

Bb

Cc

Dd

正确答案:A (备注:此答案有误)

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