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单选题
Whether using a centrifuge or a simple filter, oil cleaning and filtration will be the most effective when the oil is at a （）.
A
high temperature and a high viscosity
B
high temperature and a low viscosity
C
low temperature and a high viscosity
D
low temperature and a low viscosity
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考题
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考题
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考题
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the filter to operate more efficientlyB
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positive lube oil pump suction to be assuredD
galvanic action in the cooler to be minimized
考题
单选题A dirty fuel oil filter element can be detected by （）A
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high fuel oil tank temperatureD
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考题
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考题
单选题In a bypass type lubrication system for a diesel engine, the dirty oil line to the centrifuge should be taken from the （）.A
lube oil pump suction lineB
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考题
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ScrubberB
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考题
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A filterB
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A generator
考题
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hot waterB
cold waterC
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flashing waterB
operating oilC
flushing waterD
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考题
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WaterC
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单选题Existing crude oil tankers may，（）being provided with segregated ballast tanks or operating with a cargo tank cleaning procedure using crude oil washing，operate with dedicated clean ballast tanks in accordance with the specified provision of the Regulation.A
as perB
in the consequence ofC
in accordance withD
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考题
单选题The position of the interface between oil and water within the centrifuge is achieved by the use of （）.A
gravity discB
centrifugal bowlC
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考题
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remove the discharge ringB
re-prime the purifierC
the centrifuge to its proper speedD
install an additional discharge ring
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determine the need for filter cleaningB
measure any change in oil viscosityC
prevent damage to the filterD
determine the need for batch filtration
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oxidation resistanceB
carbon-forming tendencyC
demulsibilityD
acidity
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单选题Every（）shall be fitted with a cargo tank cleaning system using crude oil washing.A
existing crude oil tanker of 20000 tons deadweight and underB
new crude oil tanker of 20000 tons deadweight and underC
existing crude oil tanker of 20000 tons deadweight and aboveD
new crude oil tanker of 20000 tons deadweight and above
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