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[多选题]
当检测到空气中H2S浓度达到()或CO浓度达到()阈限值时启动应急程序
A.15mg/m3(10ppm)
B.30mg/m3(20ppm)
C.62.5mg/m3(50ppm)
D.31.25mg/m3(25ppm)
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AD
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A.15mg/m3(10ppm)
B.30mg/m3(20ppm)
C.62.5mg/m3(50ppm)
D.31.25mg/m3(25ppm)
AD
A.CO
B.CO2
C.SF6
D.CF4
A.NO、CO均难溶于水
B.NO、CO均为酸性氧化物
C.NO、CO均为无色、无味的有毒气体
D.在催化剂的作用,可通过反应:2CO+2NON2+2CO2来达到净化汽车尾气的目的
A.探测器
B.可燃气体浓度检测仪
C.报警器
D.检测仪