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單項選擇題

It is important to note that the injection only takes place when the plunger is moving up the cam （）.

A.base circle
B.slope
C.bottom point
D.top point

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單項選擇題

The high-pressure fuel opens the fuel valve and is sprayed into the cylinder in tiny droplets known as （）.

A.injection
B.penetration
C.atomization
D.compression

單項選擇題

Because the timing of injection is crucial, （） mounted on the camshaft, which is driven by the crankshaft are used to operate the fuel pumps, one of which is provided for each cylinder.

A.gears
B.rams
C.barrels
D.cams