【判断题】
使用气焊焊割动火作业时，氧气瓶与乙炔气瓶间距应不小于3m。
A. 对
B. 错
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答案
B
解析
暂无解析
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【判断题】
对于采用氮气或其它惰性气体对可燃气体进行置换后的密闭空间，作业前应进行含氧量检测，检测的时间不得早于作业开始前15分钟，如长时间工作，工作人员应定时轮换或休息。
A. 对
B. 错
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