Ответ:

1. Being used everywhere the automobile is a trusted and valuable servant of men.

2. Moving down the piston draws a mixture of air and vaporized gasoline into the cylinder.

3. Having a four-stroke cycle, it is called a four-stroke cycle engine.

4. Having a two-stroke cycle, the engine is called a two-stroke cycle machine.

5. Completing the stroke the piston changes the direction of motion.

Объяснение: