單項(xiàng)選擇題

The following measures can be used to improve oily water separator’s separating effect except （）

A.overhauling every two year
B.working at intervals
C.renewing filtration material
D.pumping bilge water from different layers respectively

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單項(xiàng)選擇題

If separating effect is not good, which measure should be taken （）

A.working at intervals and properly heating
B.warming up to 70℃, increase water supply flow
C.improving impulse of water supply
D.reducing water supply flow

單項(xiàng)選擇題

If separating effect is not good, we can improve it by （）

A.flushing separator with hot water
B.increasing water supply flow
C.heat oily water properly
D.opening manual oil discharge value