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單項選擇題

If the valve tappets in a diesel engine are set at greater clearances than those specified by the engine manufacturer, those valves will （）

A.open late and close early
B.open late and close late
C.fail to open when the engine is cold
D.fail to open at normal operating temperature

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單項選擇題

Lubricating systems for diesel engines are usually designed to initially provide lube oil to the engine （）

A.camshaft beatings
B.main bearings
C.piston crowns
D.cylinder walls

單項選擇題

The expansion tank in a diesel engine closed freshwater cooling system is located at （）

A.the highest point in the system
B.the lowest point in the system
C.near the floor
D.plate level or near the tank top level

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