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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

The most suitable pump for oily water separator feed duties is （）.

A.a reciprocating pump
B.a vane pump
C.a centrifugal pump
D.a triple screw pump

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单项选择题
Placing a filter on the （） of an oily water separator will "polish" the discharge but overloading must be avoided.

A.suction side
B.discharge side
C.by-pass pipe
D.sampling pipe
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.

A.pressure
B.velocity
C.gravity
D.viscosity
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The principle of separation by which all commercially available oily water separators function is （） differential between oil and water.

A.the temperature
B.the viscosity
C.the gravity
D.the size
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