题目内容
(请给出正确答案)
[单选题]
硫化氢危险临界浓度为(), 此浓度也是硫化氢监测的三级报警值,一旦达到此浓度现场作业人员必须按照应急预案立即撤离作业现场
A.10ppm(或15mg/m3)
B. 20ppm(或30mg/m3 )
C.100ppm(或150mg/m3 )
答案
查看答案
A.10ppm(或15mg/m3)
B. 20ppm(或30mg/m3 )
C.100ppm(或150mg/m3 )
第5题
A.10mg/m³(15ppm)
B.20mg/m³(30ppm)
C.30mg/m³(20ppm)
D.15mg/m³(10ppm)