单项选择题

Disposal of all kinds of garbage but is prohibited within Special Areas（）

A.plastics
B.comminuted or ground papers, rags, glass, metal etc
C.food waste comminuted or ground
D.Incinerator ash

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单项选择题

A.gravity separation
B.use of adsorbents
C.use of flocculents
D.use of chemical addition

单项选择题

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

单项选择题

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