單項(xiàng)選擇題

"Scavenging" on a diesel engine means （）.

A.injecting fuel oil into a cylinder
B.removing exhaust gases from the cylinder
C.forcing air into the cylinders under pressure after the exhaust valve has dosed
D.a combination of all the above

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單項(xiàng)選擇題

Scavenging is （） of exhaust gases by blowing in fresh air.

A.the suction
B.the compression
C.the removal
D.the deliver

單項(xiàng)選擇題

Rotating flyweights acting against spring pressure make a simple type of （）.

A.governor
B.safety valve
C.reducing valve
D.feed water regulator

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"Scavenging" on a diesel engine means （）.

你可能感興趣的試題

Scavenging is （） of exhaust gases by blowing in fresh air.

Rotating flyweights acting against spring pressure make a simple type of （）.