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[单选题]
在受限空间作业过程中取样,当可燃气体爆炸下限大于4%时,其被测浓度不大于()为合格;爆炸下限小于4%时,其被测浓度不大于()为合格
A.0.5%;0.1%
B.0.2%;0.5%
C.0.5%;0.2%
D.0.1%;0.5%
提问人:网友lixin080108
发布时间:2022-01-27
A.0.5%;0.1%
B.0.2%;0.5%
C.0.5%;0.2%
D.0.1%;0.5%
A.0.5%;0.1%
B. 0.2%;0.5%
C. 0.5%;0.2%
D. 0.1%;0.5%
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