[单选题]煤堆上采样时在非新工作面情况下,应先除去()的表面层A .0.2mB .0.5mC .0.8mD .1
[单选题]火车顶部经过运输后采样时,应先挖坑至()以下采取A .0.2-0.3mB .0.4–0.5mC .0.5-0.6mD .0.8-1.0m
[填空题] 在煤堆上采样时,底部采样点应在距地面()米处,采样时除去()米表层煤,然后采样。
[单选题]在煤堆上采样时,低部点应距地面(),在采样点上应先除去()米的表层煤,然后采样。A .0.5,0.2B .1.0,0.2C .0.5,0.4D .1.0,0.4
[单选题]在煤堆上采样时,要先将采样点表面煤层去掉()。A .01米B .02米C .04米
[单选题]在煤堆上采样,应先除去()m的表层煤。A .0.5B .0.2C .0.1D .0.4
[单选题]在煤堆上采样,在非新堆煤情况下,采样时应先除去()的表层。A .0.4mB .0.5mC .0.2mD .1.0m
[单选题]煤堆上采样时,在采样点应下挖()A .0.2m;B .0.4m;C .0.6m
[单选题]在经过车辆运输后采样时,应挖坑至()采样。A .0.3m-0.4mB .0.4m-0.5mC .0.5m-0.6mD .0.6m-0.7m
[单选题]煤堆上的采样,底面上布点应离地面()米。A . 0.5B . 1C . 0.4