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    Student examining electrical control system on furnace with professor in HVAC classroom one student in wheelchair — Stock Photo
    Student examining electrical control system on furnace with professor in HVAC classroom one student in wheelchair
    Electrical engineer working on circuit board and pressing buttons of electronic device. — Stock Photo
    Electrical engineer working on circuit board and pressing buttons of electronic device.
    Cables attached to machinery — Stock Photo
    Cables attached to machinery
    Engineer in electric power plant reviewing sensor readings — Stock Photo
    Engineer in electric power plant reviewing sensor readings
    3d illustration of synapse structure of human neurons while passing electrical signal. — Stock Photo
    3d illustration of synapse structure of human neurons while passing electrical signal.
    White wind turbines — Stock Photo
    White wind turbines
    Marabou stork (Leptoptilos crumenifer) and black kites (Milvus migrans) sitting on a power line; Hoima, Western Region, Uganda — Stock Photo
    Marabou stork (Leptoptilos crumenifer) and black kites (Milvus migrans) sitting on a power line; Hoima, Western Region, Uganda
    Friends with a large portable music player — Stock Photo
    Friends with a large portable music player
    Caustic and acid mixing area of electric power plant — Stock Photo
    Caustic and acid mixing area of electric power plant
    Mediterranean coastline of Greece with white buildings and windmills along the water edge; Greece — Stock Photo
    Mediterranean coastline of Greece with white buildings and windmills along the water edge; Greece
    Wind turbines on farmland with a farm field in the foreground; Saint Remi, Quebec, Canada — Stock Photo
    Wind turbines on farmland with a farm field in the foreground; Saint Remi, Quebec, Canada
    Senior man working on electrical wiring — Stock Photo
    Senior man working on electrical wiring
    Brain neurons, conceptual illustration — Stock Photo
    Brain neurons, conceptual illustration
    Rear view of chef working in the kitchen — Stock Photo
    Rear view of chef working in the kitchen
    One of the detectors of the Pierre Auger observatory is seen close up with the Andes in the distance. The solar panel and antenna are clearly visible; Malargue, Mendoza, Argentina — Stock Photo
    One of the detectors of the Pierre Auger observatory is seen close up with the Andes in the distance. The solar panel and antenna are clearly visible; Malargue, Mendoza, Argentina
    Girl soldering circuit board at desk in office. — Stock Photo
    Girl soldering circuit board at desk in office.
    Disc jockey, X-ray, radiology scan — Stock Photo
    Disc jockey, X-ray, radiology scan
    Close-up of electric wiring of a building under construction — Stock Photo
    Close-up of electric wiring of a building under construction
    Cable boxes and electric meter — Stock Photo
    Cable boxes and electric meter
    Abstract surface of circuit board, illustration. — Stock Photo
    Abstract surface of circuit board, illustration.
    Neon blue light sign hanging on ceiling — Stock Photo
    Neon blue light sign hanging on ceiling
    Male worker working at desk in office — Stock Photo
    Male worker working at desk in office
    Volcanic lightning. Time-exposure image of lightning in and around a large ash column produced during the 2010 Eyjafjallajokull volcanic eruptions — Stock Photo
    Volcanic lightning. Time-exposure image of lightning in and around a large ash column produced during the 2010 Eyjafjallajokull volcanic eruptions
    Mature experienced seamstress working with electrical sewing machine — Stock Photo
    Mature experienced seamstress working with electrical sewing machine
    Woman drawing a sketch in a book at home — Stock Photo
    Woman drawing a sketch in a book at home
    Photocopier in office with blue wall — Stock Photo
    Photocopier in office with blue wall
    Man unplugging electric car holding his work bag leaving home — Stock Photo
    Man unplugging electric car holding his work bag leaving home
    Power engineer entering manhole at a high voltage power distribution station — Stock Photo
    Power engineer entering manhole at a high voltage power distribution station
    Man with music headphones in car — Stock Photo
    Man with music headphones in car
    People with a large portable music player — Stock Photo
    People with a large portable music player
    Windmills Dot the California Mountainside near Tehachapi — Stock Photo
    Windmills Dot the California Mountainside near Tehachapi
    Woman drawing a sketch in a book at home — Stock Photo
    Woman drawing a sketch in a book at home
    Patient with a heart pacemaker — Stock Photo
    Patient with a heart pacemaker
    Motorcycles running on typical street in Hanoi — Stock Photo
    Motorcycles running on typical street in Hanoi
    Nerve cell, computer illustration — Stock Photo
    Nerve cell, computer illustration
    Electrical drill machine in workshop — Stock Photo
    Electrical drill machine in workshop
    Woman drawing a sketch in a book at home — Stock Photo
    Woman drawing a sketch in a book at home
    Pre-adolescent blogger girl using laptop while soldering circuit board of electric toy car in office. — Stock Photo
    Pre-adolescent blogger girl using laptop while soldering circuit board of electric toy car in office.
    Stripped aluminium cables, digital illustration. — Stock Photo
    Stripped aluminium cables, digital illustration.
    Man working in music studio using computer wearing headphones — Stock Photo
    Man working in music studio using computer wearing headphones
    Smokestacks billowing smoke in industrial plant at Apollo Beach, Florida, USA — Stock Photo
    Smokestacks billowing smoke in industrial plant at Apollo Beach, Florida, USA
    Telephone poles, power lines and cloudy sky — Stock Photo
    Telephone poles, power lines and cloudy sky
    Nerve cells and axon connections — Stock Photo
    Nerve cells and axon connections
    Woman drawing a sketch in a book at home — Stock Photo
    Woman drawing a sketch in a book at home
    Electricity substation in the West Midlands, England. — Stock Photo
    Electricity substation in the West Midlands, England.
    Man sitting on floor in rehearsal studio — Stock Photo
    Man sitting on floor in rehearsal studio
    Young woman using an anti-cellulite massager — Stock Photo
    Young woman using an anti-cellulite massager
    Friends walking on the open road with a boombox. — Stock Photo
    Friends walking on the open road with a boombox.
    Japanese woman wearing hat and holding map standing outside Buddhist temple. — Stock Photo
    Japanese woman wearing hat and holding map standing outside Buddhist temple.
    Power transmission towers at dusk near Winnipeg, Manitoba, Canada. — Stock Photo
    Power transmission towers at dusk near Winnipeg, Manitoba, Canada.
    Wildflowers Blooming On Tejon Ranch — Stock Photo
    Wildflowers Blooming On Tejon Ranch
    Close-up of technician repairing circuit board in electronics laboratory. — Stock Photo
    Close-up of technician repairing circuit board in electronics laboratory.
    A truck leaving a dusty trail when turning off one country road to another surrounded by farm fields with an electricity transmission line running across; Colorado, United States of America — Stock Photo
    A truck leaving a dusty trail when turning off one country road to another surrounded by farm fields with an electricity transmission line running across; Colorado, United States of America
    Close-up of digital tablet, circuit board and computer fan on table — Stock Photo
    Close-up of digital tablet, circuit board and computer fan on table
    Charmed girl touches glowing ball with hand in dark — Stock Photo
    Charmed girl touches glowing ball with hand in dark
    Brain neurons, conceptual illustration — Stock Photo
    Brain neurons, conceptual illustration
    Man working on a piece of wood. — Stock Photo
    Man working on a piece of wood.
    Focused male IT technician using digital tablet at panel in dark server room — Stock Photo
    Focused male IT technician using digital tablet at panel in dark server room
    Close-up of scientist using lab on a chip microscope. — Stock Photo
    Close-up of scientist using lab on a chip microscope.
    Mains power switch in computer server room with computer server cabinet — Stock Photo
    Mains power switch in computer server room with computer server cabinet