功、功率、机械效率是初中物理的重要内容,也是中考常考、必考的内容之一.然而面对这一部分学生常常感到害怕、甚至恐惧.究其原因,主要是许多学生对这些概念理解不深,不能正确地领会这些概念间的区别与联系,从而导致解题时的困惑.那么要想达到事半功倍的效果,学生要有一个好的解题方法.而要有一个好的解题方法,我认为应该解 Power, power, mechanical efficiency is an important part of junior high school physics, but also one of the content of the exam, the exam, but in the face of this part of the students often feel scared, or even fear. The reason is mainly because many students understand these concepts Not deep, can not correctly understand the differences between these concepts and connections, leading to confusion when solving problems.Then to achieve a multiplier effect, students should have a good solution to the problem, but to have a good solution to the problem , I think it should be solution