单项选择题
A.metal particles loosened by wear B.air when air cleaners are not used C.condensation of water vapors D.breakdown of the lubricating oil by dilution
Valve cages are used on some large diesel engines to （）...
单项选择题Valve cages are used on some large diesel engines to （）
A.reduce wear on the valve stem B.permit the use of alloy valve seat materials C.reduce heat transfer from the valve seat D.facilitate valve removal for servicing
If the jacket water temperature rises rapidly above nor...
单项选择题If the jacket water temperature rises rapidly above normal in a diesel engine, you should FIRST （）
A.place standby cooler in operation B.reduce engine load C.check thermostatic valve D.clean sea water strainer
Which of the following conditions can cause excessive l...
单项选择题Which of the following conditions can cause excessive lube oil consumption in a diesel engine?（）
A.Low lube oil temperature B.Dirty lube oil strainer C.Low lube oil pressure D.High lube oil temperature
