Turning on the laptop, fan noise, shutting down:
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Jet printer
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Turn off the hard drive, Turn on
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Computer keyboard
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Read the, Insert the disk into the drive
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Turn off the old monitor, Turn on
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General noise, Office work
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Room noise, read, Hard disk, write
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Disc read, Opens, closes the CD / DVD tray
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Matrix printer
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CD / DVD drive, disc read
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Shutting, Turning on the computer, fan noise
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Removed, The USB flash drive is inserted
★★★★★