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單項選擇題

A high rate of separation between oil and water is favored by （）.

A.large size of oil globule
B.low temperature
C.high viscosity
D.high flow rate

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單項選擇題

When started, a complete oily water separating unit is first filled （）The oily water mixture is then pumped through the inlet pipe into the coarse separating compartment.

A.with dirty water
B.with clean water
C.by oily water
D.by mixed water

單項選擇題

In an oily water separator the oil will travel （） to the oil collecting spaces.

A.upwards
B.downwards
C.outwards
D.forwards