更多"[单选题]专用排瓦斯巷甲烷传感器报警浓度、断电浓度、复电浓度分别是()"的相关试题:
[单选题]在专用排瓦斯巷的采煤工作面混合回风流处,甲烷传感器报警浓度、断电浓度、复电浓度分别是()
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,
[判断题]有专用排瓦斯巷的采煤工作面混合回风流处,甲烷传感器报警浓度、断电浓度、复电浓度分别是:≥ 1.0%CH4、≥ 1.0%CH4、< 1.0%CH4。( )
A.正确
B.错误
[判断题]有专用排瓦斯巷的采煤工作面混合回风流处,甲烷传感器报警浓度、断电浓度、复电浓度分炉是≥1.0%CH4,、>1.0%CH4,、<1.0%CH4
A.正确
B.错误
[单选题]专用排瓦斯巷内设置的甲烷传感器应悬挂在距专用排放瓦斯巷回风口()处
A.5m
B.10~15m
C.20m
D.30m
[单选题]采煤工作面回风巷甲烷传感器报警浓度、断电浓度、复电浓度分别是()
A.≥1.0%CH4≥1.5%CH4.1.0%CH4,
B.≥1.0%CH4..≥1.0%CH4,,1.0%CH4
C.≥1.0%CH4,≥1.5%CH4,~1.5%CH4
D.≥1.5%CH4,≥2.0%CH4,1.5%CH4
[单选题]采煤工作面上隅角甲烷传感器报警浓度、断电浓度、复电旅度分别是(
A. ≥1.0%CH4,≥1.5%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,
[单选题]封闭的地面选煤厂内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.≥1.5%CH4, ≥1.5%CH4, <1.5%CH4,
C.≥1.0%CH4,,≥1.0%CH4,,<1.0%CH4,
D.≥1.5%CH4,≥2.0%CH4,,<1.5%CH4.
[单选题]封闭的带式输送机地面走廊内,带式输送机滚筒上方,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.≥1.5%CH4,≥1.5%CH4 <1.5%CH4,
C.≥1.0%CH4,.≥1.0%CH4..<1.0%CH4
D.≥1.5%CH4,≥2.0%CH4,<1.5%CH4,
[单选题]矿用防爆特殊型蓄电池电机车,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%CH4g, ≥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,
[单选题]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%CH4,≥ 1.5%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
[单选题]采煤工作面甲烷传感器报警浓度、断电浓度、复电浓度分别是( )、( )、( )。
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
[单选题]采区回风巷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.≥ 1.5%CH4,≥ 1.5%CH4,< 1.5%CH4
C.≥ 1.0%CH4,≥ 1.0%CH4,< 1.0%CH4
D.≥ 1.5%CH4,≥ 2.0%CH4,< 1.5%CH4
[单选题]井下煤仓上方、地面选煤厂煤仓上方,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.≥1.5%CH4,,≥1.5%CH4.,<1.5%CH4,
C.≥1.0%CH4,,≥1.0%CH4,,<1.0%CH4,
D.≥1.5%CH4..≥2.0%CH4,,<1.5%CH4,
[单选题]采煤工作面上隅角甲烷传感器报警浓度、断电浓度、复电浓度分别是( )、( )、( )。
A.≥ 1.0%CH4,≥ 1.5%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
[单选题]兼做回风井的装有带式输送机的井筒,甲烷传感器报警浓度、断电浓度、复电浓度分别是()
A.≥0.5%CH4,20.5%CH4,<0.5%CH4,
B.≥0.5%CH4,≥0.7%CH4,<0.7%
C.H4,c≥1.5%CH4.4≥1.5%CH4,<1.5%CH4
D.≥1.5%CH4,≥2.0%CH4,<1.5%CH4,
[单选题]煤与瓦斯突出矿井采煤工作面进风巷,甲烷传感器报警浓度、断电浓度、复电浓度分别是()
A.≥2.0%CH4,≥2.5%CH4,<2.0%CH4,
B.≥1.5%CH4,.≥1.5%CH4.<1.5%CH4,
C.≥1.0%CH4,≥1.5%CH4,<1.0%CH4,
D.≥0.5%CH4.≥0.5%CH4,<0.5%CH4,