Engine （） refers to the relative time of position of crank， at which each operation during the cycle is commenced and is completed.
举一反三
- In four strokes engine， the cycle of events is completed in four strokes of （）.
- With the crank in position in the engine， some measurements can be taken by a special bridge gauge and （）.
- A scene (in a play) refers to a part of a play during which there is no change in time or place.
- D-day is the day of the Normandy landings, which refers to the landing operation on June 6, 1944 of the Allied i__________ of Normandy during World War II.
- 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