In the four-stroke engine， it takes （） to make one power stroke.
举一反三
- With four-stroke engines， it takes four revolutions of the crank shaft to make （） power stroke(s).
- In the four-stroke engine, it takes( )to make one<br/>power stroke() A: one propulsion B: two propulsions. C: two revolutions D: one revolution
- In the four-stroke engine， it takes （） to make one power stroke. A: one propulsion B: two propulsions C: two revolutions D: one revolutio
- Four strokes—intake stroke, compression stroke, power stroke and exhaust stroke—complete one working cycle．
- The third stroke is the power stroke．