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．

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

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

A car uses a four-stroke engine. The four strokes are( ) strokes. A: compression B: power C: intake D: exhaust

In a four-stroke engine, the cycle of events is completed in four<br/>strokes of(()) A: the cylinder B: the crankshaft C: the piston D: the crosshead

One of the differences between a two-stroke engine and a four-stroke engine is,（） A: a two-stroke engine works without exhaust operation B: a two-stroke engine works without compression stroke C: a two-stroke engine works without expansion stroke D: a two-stroke engine works without suction operatio

A car uses a four-stroke engine. The four strokes are . A: intake, compression, ignition and exhaust B: injection, rotation, ignition and exhaust C: injection, carburetion, rotation and exhaust

A car uses a four-stroke engine. The four strokes are . A: intake, compression, power and exhaust B: injection, rotation, ignition and exhaust C: injection, carburetion, rotation and exhaust D: intake, rotation, injection and ignition

In a four-stroke engines the camshaft rotates at _____.