A.揮發(fā)分 B.灰分 C.膠質(zhì)體
A.廢氣盤 B.上升管 C.鋼柱
A.4~8mm B.3~6mm C.1~2mm D.5~7mm
A.1 B.2 C.3
A.硅磚 B.粘土磚 C.隔熱磚