题目内容
(请给出正确答案)
[单选题]
安全临界浓度:工作人员在露天安全工作8h可接受的硫化氢最高浓度;硫化氢的安全临界浓度为()。
A.15mg/m3(10ppm)
B.30mg/m3(20ppm)
C.150mg/m3(100ppm)
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A.15mg/m3(10ppm)
B.30mg/m3(20ppm)
C.150mg/m3(100ppm)
A.10mg/m³(15ppm)
B.20mg/m³(30ppm)
C.30mg/m³(20ppm)
D.15mg/m³(10ppm)