A.≤8kg/h B.≤6.4kg/h C.≤5kg/h D.≤3.2kg/h
A.80m,100kg/h B.160m,50kg/h C.160m,100kg/h D.80m,50kg/h
A.火電廠備煤車間破碎機排氣筒 B.火電廠發(fā)電鍋爐煙囪 C.陶瓷隧道窯煙囪 D.水泥廠石灰石礦山開采破碎機排氣筒