單項(xiàng)選擇題

A.Raising temperature
B.less use of surfactant
C.more use of solvent
D.polishing device fouling prevention

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A.more economic
B.larger capacity on oil treatment
C.less costive
D.more capable of separating emulsified oil

A.gravity separation
B.centrifuge
C.Cyclone
D.Cross-flow membrane filtration