人民教育出版社普通高中课程标准实验教科书《物理》选修3-1第67页下面有这样一段话:“二极管是非线性元件,它的电阻与通过电流的大小有关.使用不同的多用电表,或使用不同倍率的欧姆挡时,即使测量的都是正向电阻,数值也会相差很多.”笔者在用J0411型(杭州电表厂)不同挡位测量同 People’s Education Press ordinary high school curriculum standard experimental textbook “Physical” elective 3-1 page 67 The following is the passage: “Diode is a nonlinear component, its resistance and the size of the current through the use of different multi-meter, or use Different magnification ohm block, even if the measurements are positive resistance, the value will be a lot of difference. ”I use the J0411 (Hangzhou meter factory) with different gear to measure the same