单选题Which of the following equipment is for protection against drowing?（）ASafety helmetsBBuoyance aidsCBreathing apparatusDImmersion suits
单选题
Which of the following equipment is for protection against drowing?（）
A
Safety helmets
B
Buoyance aids
C
Breathing apparatus
D
Immersion suits
参考解析
解析：
暂无解析
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