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(1)某物理实验小组在使用多用电表按正确步骤测量某一电阻阻值,选择开关指在“×10”欧姆档,指针指示位置如下图所示,则此电阻的阻值是 Ω. (2)然后他们用伏﹣安法来测未知电阻(电流表的内阻...
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高三下学期物理《》真题及答案
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