單項選擇題In describing basic diesel engine operation,the term ‘event’ refers to ()

A.the production of high pressure gases
B.the removal of expended combustion gases
C.the admission of air to the cylinder
D.all of the above


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1.單項選擇題To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()

A.Speed limiting governor
B.Over-speed governor
C.Over-speed trip
D.Over-speed relay

2.單項選擇題Diesel engine lube oil diluted with fuel oil is indicated by()

A.decreased viscosity
B.decreased pour point
C.increased flash point
D.increased viscosity