A.40%~50% B.50%~60% C.60%~70% D.70%~80%
A.30%~40% B.20%~30% C.10%~20% D.15%~25%
A.空氣脈動(dòng)跳汰機(jī) B.隔膜跳汰機(jī) C.動(dòng)篩跳汰機(jī) D.活塞式跳汰機(jī)