Photocopy (photocopy):
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Matrix printer
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Franking machine
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Read the, Insert the disk into the drive
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Laser printer
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Turn off the hard drive, Turn on
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Turn off the old monitor, Turn on
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Computer mouse movement
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Computer simulated laser
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Jet printer
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Closing the laptop cover, Opening
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Computer mouse click
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Read, room noise, Hard disk, write
★★★★★