电视机遥控器是利用      线来实现对电视机控制的。有时,我们

电视机遥控器是利用      线来实现对电视机控制的。有时,我们把遥控器对着电视机周围的光滑墙壁也能实现控制,这是利用光的       原理.

答案

红外线 ;反射 。解析:
电视机遥控器是利用红外线线来实现对电视机控制的。有时,我们把遥控器对着电视机周围的光滑墙壁也能实现控制,这是利用光的反射原理.

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