單項(xiàng)選擇題

If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）

A.loss of suction in the circulating pump
B.leak in the primary cooling system
C.broken raw water pump shaft
D.burned or cracked piston in one cylinder

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單項(xiàng)選擇題

To minimize the formation of carbon deposits on fuel injection nozzles, you should （）

A.avoid using liquid-cooled nozzles whenever possible
B.avoid low cooling water temperatures
C.avoid prolonged overloading of the engine
D.make certain the gasket seal between the nozzle and cylinder head is tight

單項(xiàng)選擇題

In a simple mechanical governor, the （）

A.centrifugal force rotates the ball-head
B.flyweight centrifugal force is balanced by spring force
C.flyweight centrifugal force is balanced by hydraulic pressure
D.speeder spring alone actuates the fuel control rod

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If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）

你可能感興趣的試題

To minimize the formation of carbon deposits on fuel injection nozzles, you should （）

In a simple mechanical governor, the （）