单选题:下列选项中,既可作为输入设备又可作为输出设备的是(  )。

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题目内容:
下列选项中,既可作为输入设备又可作为输出设备的是(  )。 A.扫描仪
B.绘图仪
C.鼠标器
D.磁盘驱动器

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答案解析:

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