單項選擇題

Which of the equipment listed is most effective in processing bilge slops for overboard discharge?（）

A.100PPM oily water separator
B.Assembling the lube oil purifier as a separator and aligning bilge overboard
C.A 15PPM oily water separator
D.A magnetic duplex strainer

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單項選擇題

If you heard a ‘crackling’ noise in centrifugal pump, the most probable cause of the problem would be（）

A.insufficient speed
B.cavitation
C.excess discharge pressure
D.excessive net positive suction head B

單項選擇題

The valve which is most suited for regulating the flow through a pipeline is a （）

A.gate valve
B.globe valve
C.swing-check valve
D.plug-cock valve

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Which of the equipment listed is most effective in processing bilge slops for overboard discharge?（）

你可能感興趣的試題

If you heard a ‘crackling’ noise in centrifugal pump, the most probable cause of the problem would be（）

The valve which is most suited for regulating the flow through a pipeline is a （）