如图是小明书桌上所用的台灯的示意图台灯的面板上有一个可调旋钮旋动旋钮可以改变灯泡的亮度请你在空白处画出台灯的电路图．题目和参考答案 Sketch Coloring Page

如图是小明书桌上所用的台灯的示意图台灯的面板上有一个可调旋钮旋动旋钮可以改变灯泡的亮度请你在空白处画出台灯的电路图．题目和参考答案 Template

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