题目内容
Motherboard is used to type text or input information to the computer.
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Motherboard is the main curcuit board outside the PC. It holds the CPU, and the memory program, to perform the basic arithmetical, logical, and input/output operations.
Monitor is an output device that is used to display the information on the screen.
Generally a mouse has three buttons left and right to perform different functions and a small wheel between the two mouse buttons.
羽毛球发球按球在空中飞行的弧线可分为高远球、平高球、平快球和网前球等。
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