题目内容
(请给出正确答案)
[单选题]
硫化氢检测仪第三级报警值应设置在危险临界浓度 ()。
A.10mg/m³(15ppm)
B.20mg/m³(30ppm)
C.30mg/m³(20ppm)
D.150mg/m³(100ppm)
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A.10mg/m³(15ppm)
B.20mg/m³(30ppm)
C.30mg/m³(20ppm)
D.150mg/m³(100ppm)
A.10mg/m³(15ppm)
B.20mg/m³(30ppm)
C.30mg/m³(20ppm)
D.15mg/m³(10ppm)
A.10ppm(或15mg/m3)
B. 20ppm(或30mg/m3 )
C.100ppm(或150mg/m3 )
A.15mg/m3(10ppm)
B.30mg/m3(20ppm)
C.75mg/m3(50ppm)
D.150mg/m3(100ppm)