Computer interface, alarm:
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Alarm, Computer interface
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Fan noise, Turning on the laptop, shutting
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Read, room noise, write, Hard disk
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The USB flash drive is inserted, removed
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Environmental sounds, Office work, typewriter
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Repeatedly pressing a computer mouse
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Insert the disk into the drive, read the
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Manual copy machine
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CD / DVD drive, disc read
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Photocopy (photocopy)
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Floppy disk reading
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Turn off the old computer, Turn on
★★★★★