A.±0.20%CH4
B.±0.10%CH4
C.真值的±10%CH4
D.真值的±20%CH4
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A.2m,20m
B.1m,20m
C.5m,20m
D.1m,10m
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.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.8h
B.12h
C.24~48h
D.72h
开始考试点击查看答案A.1℃
B.0.2℃
C.0.5℃
D.0.1℃
开始考试点击查看答案A.10mA
B.50mA
C.200mA
D.100mA
开始考试点击查看答案A.7
B.10
C.15
D.20
开始考试点击查看答案A.4%
B.15%
C.20%
D.10%
开始考试点击查看答案A.7
B.10
C.15
D.20
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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