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单选题
A lube oil filter can be used to remove most contaminants from lube oilA contaminant which will remain in the lube oil after filtering is （）.
A
acid
B
fuel oil
C
sediment
D
water
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单选题A dirty lube oil strainer can result in（）A
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low lube oil temperatureC
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单选题A dirty diesel engine oil filter element can best be detected by （）.A
visual inspection of the elementsB
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考题
单选题The pressure difference before and after the lube oil filter indicates （）the filter should be cleaned.A
whenB
howC
whereD
whether
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单选题To determine if the lube oil filter elements need changing, （）.A
open the filter and inspect the elementsB
check the lube oil pump discharge pressureC
check the lube oil header pressureD
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单选题The lube oil cooler is located after the lube oil filter in order for （）A
the filter to operate more efficientlyB
the lube oil cooler to be bypassedC
positive lube oil pump suction to be assuredD
galvanic action in the cooler to be minimized
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单选题A lube oil filter can be used to remove most contaminants from lube oilA contaminant which will remain in the lube oil after filtering is （）.A
acidB
fuel oilC
sedimentD
water
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单选题If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be （）A
a dirty lube oil strainerB
internal water leaksC
an oil suction line restrictionD
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单选题Which of the listed conditions can cause a diesel engine to use too much lube oil?（）A
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单选题Excessive lubricating oil consumption in a running diesel engine can be caused by （）A
clogged lube oil pipingB
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单选题Fuel oil contamination of an auxiliary diesel engine lube oil can result in（）A
an increased flash pointB
higher lube oil pressuresC
an increased viscosityD
lower lube oil pressures
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单选题When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.A
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use the settler to remove the fuel oilC
remove the fuel oil by centrifugingD
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单选题In a full flow type lube oil system, the bypass relief valve will lift due to （）A
a clogged filter elementB
excessive lube oil pump discharge pressureC
excessive lube oil flowD
excessively hot lube oil
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单选题Which of the following conditions can cause excessive lube oil consumption in a diesel engine?（）A
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Dirty lube oil strainerC
Low lube oil pressureD
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under high pressureB
under low pressureC
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单选题Which of the listed conditions can be used to determine if lube oil has been diluted by fuel? （）A
Viscosity is decreasedB
Octane number is alteredC
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Blower’s speed is decreased
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单选题A centrifuge will satisfactorily remove which of the following contaminants from fuel oil?（）A
GasolineB
WaterC
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考题
单选题When fuel oil is accidentally missed with lube oil which of the following processes can be used to separate them?（） Ⅰ.filtering Ⅱ.settlingA
Ⅰ onlyB
Ⅱ onlyC
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考题
单选题The pressure differential across a diesel engine lube oil system duplex filter should be checked to （）A
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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考题
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filteredD
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high lube oil temperatureB
low lube oil temperatureC
excessive cylinder coolingD
high air injection pressure
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