Turn on, turn off the old monitor:
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Read, write, room noise, Hard disk
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Communication room, computer noise
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Office work, typewriter, environmental sounds
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Laser printer
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Turn off the old monitor, Turn on
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Turning on the computer, fan noise, shutting
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Office work, general noise
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Read the, Insert the disk into the drive
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Franking machine
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Double click computer mouse
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Closes the CD / DVD tray, Opens, disc read
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CD / DVD drive, disc read
★★★★★