CRT图形显示器的分辨率表示（）。

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【单选题】【消耗次数：1】

CRT图形显示器的分辨率表示（）。

① 一个图像点（像素）的物理尺寸

② 显示器一行能显示的最大图像点数与一列能显示的最大图像点数

③ 显示器屏幕可视区域的大小

④ 显示器能显示的字符个数

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