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(jī)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(jī)排氣筒
A.2項(xiàng) B.3項(xiàng) C.4項(xiàng) D.5項(xiàng)