采煤机的甲烷传感器报警浓度、断电浓度、复电浓度分别是____。
A.≥1.0%CH ,≥1.5%CH ,<1.0%CH
B.≥1.5%CH ,≥1.5%CH ,<1.5%CH
C.≥0.5%CH ,≥1.0%CH ,<0.5%CH
D.≥1.5%CH ,≥2.0%CH ,<1.5%CH
A.≥1.0%CH ,≥1.5%CH ,<1.0%CH
B.≥1.5%CH ,≥1.5%CH ,<1.5%CH
C.≥0.5%CH ,≥1.0%CH ,<0.5%CH
D.≥1.5%CH ,≥2.0%CH ,<1.5%CH
A.≥1.0%CH4,≥1.5%CH4,
B.≥1.5%CH4,≥1.5%CH4,
C.≥0.5%CH4,≥1.0%CH4,
D.≥1.5%CH4,≥2.0%CH4,
A.报警值≥1.0% ,断电值≥1.0%,复电值<1.0%
B.报警值≥1.5% ,断电值≥1.5%,复电值<1.0%
C.报警值≥1.0% ,断电值≥1.5%,复电值<1.0%
A.≥1.0%CH4,≥1.5%CH4,<1.0%CH4
B.≥1.5%CH4,≥1.5%CH4,<1.0%CH4
C.≥0.5%CH4,≥1.0%CH4,<0.5%CH4
D.≥1.5%CH4,≥2.0%CH4,<1.5%CH4
A.≥1.0%CH4;≥1.0%CH4;<1.0%CH4
B.≥1.5%CH4;≥1.5%CH4;<1.0%CH4
C.≥1.0%CH4;≥1.5%CH4;<1.0%CH4
D.≥1.5%CH4;≥1.0%CH4;<1.0%CH4
A.≥0.5%CH4,≥0.5%CH4,<0.5%CH4
B.≥1.5%CH4,≥1.5%CH4,<1.5%CH4
C.≥1.0%CH4,≥1.0%CH4,<1.o%CH4
D.≥1.5%CH4,≥2.0%CH4,<1.5%CH4
B、≥1.5%CH ,≥1.5%CH ,<1.0%CH
C、≥0.5%CH ,≥1.0%CH ,<0.5%CH
D、≥1.5%CH ,≥2.0%CH ,<1.5%CH
A≥0.5 %、≥0.5%、<0.5%
B≥1.0%、 ≥0.5%、<0.5 %
C≥0.5%、 ≥1.0 %、<0.5 %
A.≥1.0%CH4,≥1.0%CH4,<1.0%CH4
B.≥1.5%CH4,≥1.5%CH4,<1.5%CH4
C.≥0.5%CH4,≥1.0%CH4,<0.5%CH4
D.≥1.5%CH4,≥2.0%CH4,<1.5%CH4
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