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单选题
The （）pump is usually used as the bilge feed pump to an oily water separator.
A
turbine
B
screw
C
vane
D
ejector
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考题
单选题Oil water separators are used to ensure that ships don’t discharge oil when （） bilge water.A
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考题
单选题On modern ships, centrifugal pump with a self-primer has replaced reciprocating pump as bilge pump because（）A
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单选题If the feed pump for an auxiliary boiler fails to deliver the feed water to the boiler, the cause maybe （）.A
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abnormally high feed water temperatureC
abnormally high boiler water temperatureD
steam demand exceeding feed pump capacity
考题
单选题The （）pump is usually used as the lubricating oil pump.A
turbineB
screwC
vaneejectorD
centrifugal
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