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

你可能感興趣的試題

The primary purpose of oil control rings on a diesel piston is to（）

A.provide a reservoir for cylinder lubrication
B.pump oil into the combustion space for cylinder cooling
C.prevent excessive lubricating oil consumption
D.allow hydraulic oil film formation on the cylinder

單項選擇題

The purpose of compressing the air within the cylinder of a diesel engine is to （）

A.produce the heat for ignition
B.decrease injection lag
C.increase ignition delay
D.aid in exhausting burnt gases

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