你可能感興趣的試題

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

單項(xiàng)選擇題

If the flame from combustion in the cylinder of a four-stroke engine past the piston into the space below, the accumulation of flammable mixture would be ignited, thus resulting in （）.

A.the crankcase explosion
B.lifting of the cylinder safety valve
C.a scavenge fire
D.opening of the manhole