你可能感興趣的試題

"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

單項選擇題

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

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