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單項(xiàng)選擇題

Faulty operation of diesel engine fuel injection nozzles can be directly caused by （）.

A.water in the fuel oil supply
B.excessive fuel nozzle holder cooling
C.a distorted fuel spray pattern
D.leakage past the plunger into the oil drain

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單項(xiàng)選擇題

Due to excessive water in the fuel, a diesel engine fails to startBefore the engine can be started, the water must be removed from the （）.

A.fuel pumps
B.cylinders
C.fuel strainers
D.all of above

單項(xiàng)選擇題

A large, low-speed, crosshead, main propulsion diesel engine using residual fuel oils must have a cylinder oil having a （）

A.low TBN value
B.high alkaline reserve
C.low flash point
D.high pour point