Automatic telephone switch:
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Grind metal on a grinding machine in a
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Lithographic press
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Glass bottles on a conveyor line, room noise
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Notches, print imprinted in cardboard
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Work in a warehouse, general noise, loaders
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Automatic folder
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Work, start, Generator, jamming
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Mechanical lift
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Compressor industry
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Air compressor turn on, turn off
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Lathe turning on, work, stop
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Crusher
★★★★★