A.停用攪拌器B.停止加白土C.適當(dāng)提高白土加入量D.混合罐通過熱蒸汽
A.適當(dāng)降低真空度B.適當(dāng)升高真空度C.適當(dāng)降低塔液位D.適當(dāng)升高塔液位
A.全封閉式葉輪B.閉式葉輪C.全開式葉輪D.半開式葉輪