题目内容
(请给出正确答案)
[单选题]
当环境空气中硫化氢浓度超过()mg/m3(ppm)时,应佩带正压式空气呼吸器。
A.75(50)
B.30(20)
C.15(10)
D.150(100)
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A.75(50)
B.30(20)
C.15(10)
D.150(100)
A.30ppm
B.15mg/m³(10ppm)
C.30mg/m³(20ppm)
D.150mg/m³(100ppm)
A.0.06,0.15
B.0.06,0.12
C.0.05,0.10
D.0.05,0.20
A.检查泄漏点
B.准备防护用具
C.迅速打开排风扇
D.实施应急程序