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研究往年的高考物理试卷,发现下面的这三道题形异质同:它们所考查的实验原理及实验能力都是相同的.例1用图1所示的电路测定未知电阻R_x
Study the college entrance examination physics papers in previous years and found that the following three questions are of the same nature: the experimental principles and experimental capabilities they examined are the same. Example 1 Using the circuit shown in Figure 1 to determine the unknown resistance R_x