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
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
开始考试点击查看答案A.≥0.5%CH4,≥0.5%CH4,<0.5%CH4
B.≥0.5%CH4,≥0.7%CH4,<0.7%CH4
C.≥1.5%CH4,≥1.5%CH4,<1.5%CH4
D.≥1.5%CH4,≥2.0%CH4,<1.5%CH4
开始考试点击查看答案A.≥0.5%CH4,≥0.5%CH4,<0.5%CH4
B.≥1.5%CH4,≥1.5%CH4,<1.5%CH4
C.≥1.0%CH4,≥1.5%CH4,<1.0%CH4
D.≥1.5%CH4,≥2.0%CH4,<1.5%CH4
开始考试点击查看答案A.井下有照明地点,可以两个人合用一盏矿灯
B.充电房领到的矿灯,不必再进行检查
C.矿灯的灯锁失效. 玻璃罩有破裂,但亮度达到要求时就可以使用
D.领到矿灯后,一定要进行认真检查,确认完好后,方可带入井下
开始考试点击查看答案A.1.00%
B.0.50%
C.1.50%
D.2.00%
开始考试点击查看答案A.8h
B.12h
C.24~48h
D.72h
开始考试点击查看答案A.硫化氢或二氧化硫
B.高浓度瓦斯
C.一氧化碳
D.二氧化碳
开始考试点击查看答案A.0.01%CH4
B.0.02%CH4
C.0.05%CH4
D.0.03%CH4
开始考试点击查看答案A.2m,20m
B.1m,20m
C.5m,20m
D.1m,10m
开始考试点击查看答案A.0.1%CH4,0.1%CH4
B.0.1%CH4,0.4%CH4
C.0.01%CH4,0.1%CH4
D.0.01%CH4,0.01%CH4
开始考试点击查看答案长理培训客户端 资讯,试题,视频一手掌握
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