With four-stroke engines， it takes four revolutions of the crank shaft to make （） power stroke(s).
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
- Four strokes—intake stroke, compression stroke, power stroke and exhaust stroke—complete one working cycle．
- In the four-stroke engine， it takes （） to make one power stroke. A: one propulsion B: two propulsions C: two revolutions D: one revolutio
- In the four-stroke engine， it takes （） to make one power stroke.
- A two stroke diesel engine exhaust temperature will be lower than a four stroke diesel engine of the same displacement because the _____. ① MEP is lower and the scavenging air is cooling the exhaust gases ② valve overlap in a four stroke A.① B.② C.① and ② D.Neither ① nor ② is correct