单项选择题
A.a reciprocating pump
B.a vane pump
C.a centrifugal pump
D.a triple screw pump
单项选择题 Placing a filter on the () of an oily water separator will "polish" the discharge but overloading must be avoided.
单项选择题 The resistance to the movement of the globule in oily water mixture depends on its size and the () of the fluid.
单项选择题 The principle of separation by which all commercially available oily water separators function is () differential between oil and water.