With four-stroke engines, it takes four revolutions of the crank shaft to make （） power stroke(s).

With （） unit the timing of fuel injection of an engine ...

单项选择题With （） unit the timing of fuel injection of an engine can be regulated automatically.

With supercharging a larger mass of air is supplied to ...

单项选择题With supercharging a larger mass of air is supplied to the cylinder by blowing it in under pressure, which is the best means to （） of the engine.

Whilst the engine is turning, check to see that no wate...

单项选择题Whilst the engine is turning, check to see that no water is leaking into the crankcase, scavenge air belt, or from （）.