回风流中机电设备硐室的进风侧,甲烷传感器报警浓度、断电浓度、复电浓度分别是( )。
A.≥0.5%CH4,≥0.5%CH4,＜0.5%CH4 B.≥1.0%CH4,≥1.5%CH4,＜1.0%CH4 C.≥1.5%CH4,≥1.5%CH4,＜1.5%CH4 D.≥1.5%CH4,≥2.0%CH4,＜1.5%CH4正确答案A
回风流中机电设备硐室的进风侧,甲烷传感器报警浓度、断电浓度、复电浓度分别是( )。
A.≥0.5%CH4,≥0.5%CH4,＜0.5%CH4 B.≥1.0%CH4,≥1.5%CH4,＜1.0%CH4 C.≥1.5%CH4,≥1.5%CH4,＜1.5%CH4 D.≥1.5%CH4,≥2.0%CH4,＜1.5%CH4正确答案A
