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A mechanic works in a garage, changing the tires on a large truck
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A bus mechanic is in the garage, inspecting the engine of a city bus
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An electrician installs wiring in a new house, manually threading wires through walls and connecting them to outlets and switches
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A painter is standing on a ladder, manually applying paint to a wall with a roller.
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A plumber is under a sink with a toolbox, tightening pipes and sealing leaks with a wrench and plumber’s tape