题目内容
This operating system feature is controlled by a mouse and changes shape depending onits current function.
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The operating system based on Linux, designed for notebook computers that use cloudcomputing and cloud storage:
The mobile operating system developed by Apple and originally called iPhone
A utility program that copies all files in the libraries, contacts, favorites, and on the desktop:
A troubleshooting utility that identifies and eliminates nonessential files, frees up valuable disk space, and improves system performance:
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