我从事农机工作20多年,断续担任过拖拉机手等训练班的教师。通过讲内燃机课,我有了一些体会,在这里和同行们交流。一道思考题单缸四冲程内燃机的工作过程可以说是讲内燃机课的开场白。讲好了,就为讲配气机构的配气相打好了基础,对讲其它系统、机构、装置也是很有利的。讲完这一课, I work in agricultural machinery for more than 20 years, intermittent served as tractor hands and other training teachers. By talking about internal combustion engine class, I have some experience, here and colleagues to communicate. A thinking question Single-cylinder four-stroke internal combustion engine working process can be said that the internal combustion engine class opening. Having said that, to talk about the rationing of gas distribution agencies with a good foundation, intercom other systems, institutions, devices are also very beneficial. After this lesson,