In the four-stroke engine， it takes （） to make one power stroke.
A: one propulsion
B: two propulsions
C: two revolutions
D: one revolutio
A: one propulsion
B: two propulsions
C: two revolutions
D: one revolutio
举一反三
- 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.
- With four-stroke engines， it takes four revolutions of the crank shaft to make （） power stroke(s).
- Four strokes—intake stroke, compression stroke, power stroke and exhaust stroke—complete one working cycle．
- There are two kinds of stroke, and they are ischemic stroke and hemorrhagic stroke.