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单选题
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated （）
A
for atomizing
B
for centrifuging
C
in a storage tank
D
in the re-circulating line
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an increased flash pointB
higher lube oil pressuresC
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decrease the fuel oil supply pressureD
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单选题When considering the lowest fuel system operating temperature, （） are important.A
specific gravity or relative densityB
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higher calorific and lower calorific valuesD
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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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单选题The most common cause of lowering the crankcase lube oil flash point is （）.A
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heater supply steam flowC
pressure of the fuel supplied to the burnersD
attemperator steam flow in the heater discharge circuit
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单选题Obviously, for a given fuel oil, its pour point is （） its cloud point.A
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quantity of fuel to be receivedB
flash point of the fuel as it is receivedC
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单选题If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the （）A
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gasket surfaces of the fuel oil filtersC
discharge fitting of the fuel injector pumpsD
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考题
单选题If a used lube oil analysis indicates excessive fuel dilution, the lube oil should be （）A
changedB
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filteredD
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考题
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单选题The temperature of the fuel oil received during bunkering operations is critical in determining the（）A
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two fuel oil transfer pumps provided where one is to be independent of the main engineB
two fuel oil transfer pumps, with a combined capacity exceeding the maximum consumption of the main engineC
engine driven transfer pumps and only used in constant speed applicationsD
the capacity of the engine driven pump exceed the consumption rate of the engine to which it is attached
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