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

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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

單項選擇題

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

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

你可能感興趣的試題

Diesel engine lube oil diluted with fuel oil is indicated by（）

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