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单选题
To minimize corrosion, fuel oil strainer disks, spacers and scraper blades are made of （）.
A
brass
B
copper
C
iron
D
monel metal or stainless steel
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low bearing oil pressure
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excessive fuel oil consumptionC
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decrease the fuel oil supply pressureD
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单选题Which of the followings will affect the spray of fuel oil?（）A
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单选题Which of the following machinery space operations is required to be logged in the Oil Record Book?（）A
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the engines speedB
the engines loadC
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diesel oil instead fuel oilD
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lube oil strainer magnets bearingC
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单选题Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce（）.A
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carbon accumulation on the nozzlesD
fuel detonation in the cylinders
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单选题Proper filtering and straining of fuel oil is important because the （）.A
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