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单选题
With respect to the flow of lubricating oil through a diesel engine, the lube oil coolers are located after filters in order to （）.
A
allow filtration of less viscous oil
B
decrease the pressure drop across the filter
C
improve overall filtration
D
all of the above
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单选题The oil pressure and flow from each bearings can be checked when（）A
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单选题Overflow valve is used to （）A
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单选题What is one effect of running a diesel engine at too cool a temperature? （）A
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单选题There will usually be summaries or daily account tables for heavy oil, diesel oil, lubricating oil, and fresh water, which will be compiled（）A
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PressureD
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考题
单选题How often should the lubricating oil of a diesel engine be changed?（）A
After every tripB
Every 4000 hoursC
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考题
单选题Which lubricating oil additive is used in diesel engines to reduce the tendency for sludge and varnish to form on the engine parts?（）A
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main bearingsB
connecting rod bearingsC
piston pin bushingsD
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单选题Which of the following conditions may need to be reduced when operating a large, low speed, main propulsion, diesel engine at low loads?（）A
Injection pressuresB
Control air supply pressureC
Cooling water flow through after-coolersD
Lube oil temperature
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