A.2% B.1.5% C.1.0% D.1.2%
A.1.5% B.0.8% C.1.2% D.1%
A.《礦山安全法》 B.《作業(yè)規(guī)程》 C.《操作規(guī)程》 D.《煤礦安全規(guī)程》