单项选择题

In a （） engine the charge of air in the cylinder before compression commences is above atmospheric pressure.

A.pressure charged
B.naturally aspirated
C.contaminated
D.high speed diesel

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单项选择题

If there is water in fuel oil, the revolution of the engine will （）.

A.decrease
B.increase
C.be dismantled
D.be reassembled

单项选择题

If the sump（）were to rise this would indicate water leakage into the oil an d an investigation into the cause must be made.

A.temperature
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C.lever
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单项选择题

If the needle valve in a fuel injection nozzle sticks open （）.

A.no fuel will be delivered through the nozzle
B.the nozzle will overheat and crack
C.time of injection will change
D.fuel will leak into the drain line