1.an understanding of how the systems work help you understand how the automobile works .了解各系统如何工作有助于了解汽车是如何工作的。2.these support the vehicle and cushion it from road bumps for better ride and handling.它们支撑着车身,并缓解由于路面不平引起的颠簸,以获得更好的乘坐舒适型和操作稳定性。3.The purpose of an automobile engine is to supply the power needed to move the vehicle.汽车发动机的功用是提供汽车行驶所需的动力4.The internal combustion engine is a device used to convert the chemical energy of the fuel into heat energy .and then convert thi