从近几年高考考生的反映来看,热学题目似乎越来越难,但笔者通过认真研究近几年全国各地的高考热学题目,发现突破热学难点的关键是正确区分以下三大功 According to the reflection of college entrance examination candidates in recent years, the problem of heat seems to be getting harder and harder. However, by carefully studying the topic of heat entrance examination in colleges and universities across the country in recent years, I found that the key to breaking through the heat challenge is to correctly distinguish the following three major functions