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鼠标器（MOUSE）是（）。
- A、输出设备
- B、输入设备
- C、存储器设备
- D、显示设备
参考答案
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单选题A user states that they unplugged their mouse to clean the roller ball, but after plugging it back in the mouse no longer functions. Which of the following is the MOST likely cause of this issue?（）A
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2C
3D
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