机械效率的计算题是中考的常考题型,同学们只要把握机械效率计算题的解题技巧,准确地辨析哪个力做的功是有用功,哪个力做的功又是总功,就能正确快速地解题.本文通过机械效率的一般题型的举例与分析,与同学们来共同探讨与小结机械效率计算题的解题技巧. The calculation of mechanical efficiency is the most commonly used test questions in the senior high school entrance examination. Students only need to grasp the problem-solving skills of mechanical efficiency calculation problems, accurately distinguish which force is useful and which strength is the total work. Quickly solve problems.This paper through the examples and analysis of the general questions of mechanical efficiency, with students to discuss and summarize the mechanical efficiency calculation problem solving skills.