【单选题】【消耗次数：1】
为了预防近视，看电视时眼与屏幕的高度最好是（ ）
①
A、眼比屏幕稍高一些
②
B、屏幕比眼稍高一些
③
C、两者等高
④
D、以上都不是
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相关题目
【单选题】
屏幕超时设置与屏幕保护程序设置中的时间设置，他们的含义（ ）
①
一样，都是超时后关闭显示器
②
不一样，屏幕超时设置可以在超时后关闭显示器，屏幕保护程序设置中的时间超时会运行屏幕保护程序。
③
同一件事，不一样的描述而已
④
一样，都是超时后进入屏幕保护程序
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