硫化氢检测仪第一级报警值应设置在阈限值()。 ["10mg\/m3<\/sup>(15ppm)","20mg\/m3<\/sup>(30ppm)","30mg\/m3<\/sup>(20ppm)","15mg\/m3<\/sup>(10ppm)"]
沥青表面处治
硫化氢检测仪第二级报警值应设置在安全临界浓度()。 ["10mg\/m3<\/sup>(15ppm)","20mg\/m3<\/sup>(30ppm)","30mg\/m3<\/sup>(20ppm)","15mg\/m3<\/sup>(10ppm)"]
硫化氢检测仪第三级报警值应设置在危险临界浓度()。 ["10mg\/m3<\/sup>(15ppm)","20mg\/m3<\/sup>(30ppm)","30mg\/m3<\/sup>(20ppm)","150mg\/m3<\/sup>(100ppm)"]
分闸相间同步
同步调相机