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（）is a word processing tool that helps you to create quality documents.

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（）refers to the parts of the computer that you can see and touch.

A mouse is a small device that a computer user pushed across a desk surface in order toe point to a place on a ( ) and to select one or more action to take from that.position.

A processor is composed of two functional units, they are（）.

Most system boards have two kinds of power connectors: （）.