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    Instructor discussing air conditioner recharging with students in HVAC classroom one student in wheelchair — Stock Photo
    Instructor discussing air conditioner recharging with students in HVAC classroom one student in wheelchair
    Closeup of steel joint connecting flanges with bolts and nuts on pipe transferring liquids at factory — Stock Photo
    Closeup of steel joint connecting flanges with bolts and nuts on pipe transferring liquids at factory
    Landscape of old mining structures in Riotinto Huelva Spain — Stock Photo
    Landscape of old mining structures in Riotinto Huelva Spain
    Technical personnel in hard hats working together in the factory inspection — Stock Photo
    Technical personnel in hard hats working together in the factory inspection
    Car in a workshop and a computer running diagnostics on the engine. — Stock Photo
    Car in a workshop and a computer running diagnostics on the engine.
    Male teacher calling on students in classroom — Stock Photo
    Male teacher calling on students in classroom
    Oil and gas worker leaning on giant pipelines and looking at seascape. — Stock Photo
    Oil and gas worker leaning on giant pipelines and looking at seascape.
    Mobile phone circuit board, full frame. — Stock Photo
    Mobile phone circuit board, full frame.
    Worker preparing machine in steel factory — Stock Photo
    Worker preparing machine in steel factory
    Cropped image of blacksmith in protective gloves forging with hammer on anvil in industry. forging, metalwork and manufacturing industry. — Stock Photo
    Cropped image of blacksmith in protective gloves forging with hammer on anvil in industry. forging, metalwork and manufacturing industry.
    Gene editing, conceptual digital illustration. — Stock Photo
    Gene editing, conceptual digital illustration.
    Grains in plastic cup for agriculture research, conceptual image. — Stock Photo
    Grains in plastic cup for agriculture research, conceptual image.
    Closeup of steel joint connecting flanges with bolts and nuts on pipe transferring liquids at factory — Stock Photo
    Closeup of steel joint connecting flanges with bolts and nuts on pipe transferring liquids at factory
    Designers meeting, reviewing plans in workshop — Stock Photo
    Designers meeting, reviewing plans in workshop
    Mining Truck,Open pit mining of iron ore and magnetite ores.Loading the iron ore into heavy dump truck at the opencast mining. — Stock Photo
    Mining Truck,Open pit mining of iron ore and magnetite ores.Loading the iron ore into heavy dump truck at the opencast mining.
    Male engineers using laptop in factory — Stock Photo
    Male engineers using laptop in factory
    Bottom view of Eiffel Tower — Stock Photo
    Bottom view of Eiffel Tower
    Power engineers placing ladder inside manhole at high voltage power distribution station — Stock Photo
    Power engineers placing ladder inside manhole at high voltage power distribution station
    Students programming and testing robotics in classroom — Stock Photo
    Students programming and testing robotics in classroom
    Silhouettes of wind turbines in Germany — Stock Photo
    Silhouettes of wind turbines in Germany
    Engineer using a digital tablet at entrance of a wind mill at a wind farm — Stock Photo
    Engineer using a digital tablet at entrance of a wind mill at a wind farm
    Midsection of blacksmith in protective gloves forging with hammer on anvil in industry. forging, metalwork and manufacturing industry. — Stock Photo
    Midsection of blacksmith in protective gloves forging with hammer on anvil in industry. forging, metalwork and manufacturing industry.
    Hover Dam Complex on Colorado River, Nevada, USA — Stock Photo
    Hover Dam Complex on Colorado River, Nevada, USA
    Railroad grain and cars — Stock Photo
    Railroad grain and cars
    Fitting of pressure hose made of metal braid and protected with external steel spring — Stock Photo
    Fitting of pressure hose made of metal braid and protected with external steel spring
    Landscape of old mining structures in Riotinto Huelva Spain — Stock Photo
    Landscape of old mining structures in Riotinto Huelva Spain
    From below side view of male technician in work wear standing on scaffolding and preparing for installation of solar panel on wooden construction — Stock Photo
    From below side view of male technician in work wear standing on scaffolding and preparing for installation of solar panel on wooden construction
    Two vans in a large repair workshop for repair and respraying — Stock Photo
    Two vans in a large repair workshop for repair and respraying
    Factory worker assembling a bicycle — Stock Photo
    Factory worker assembling a bicycle
    Mid section of welder repairing vessel part in workshop — Stock Photo
    Mid section of welder repairing vessel part in workshop
    Marine engineer standing with clipboard in workshop — Stock Photo
    Marine engineer standing with clipboard in workshop
    Desk with various equipment in an electronics repair centre — Stock Photo
    Desk with various equipment in an electronics repair centre
    Instructor discussing fuel mixture controls for furnace in HVAC classroom while one student in wheelchair taking notes — Stock Photo
    Instructor discussing fuel mixture controls for furnace in HVAC classroom while one student in wheelchair taking notes
    Group of workers in uniform and helmets installing photovoltaic panels on roof of wooden construction near house — Stock Photo
    Group of workers in uniform and helmets installing photovoltaic panels on roof of wooden construction near house
    From below happy middle aged Hispanic foreman in in hardhat and waistcoat browsing on smartphone looking at screen while standing near solar power station — Stock Photo
    From below happy middle aged Hispanic foreman in in hardhat and waistcoat browsing on smartphone looking at screen while standing near solar power station
    Female power engineer adjusting water valves at power plant — Stock Photo
    Female power engineer adjusting water valves at power plant
    Beautiful landscape with mountains and Chinese Lijiaxia reservoir in Qinghai Province — Stock Photo
    Beautiful landscape with mountains and Chinese Lijiaxia reservoir in Qinghai Province
    Close-up of various screws on table in a repair centre — Stock Photo
    Close-up of various screws on table in a repair centre
    Front view of Asian male architect sitting at desk while using mobile phone and architectural model, triangle ruler, pencils and blueprint on desk in modern office — Stock Photo
    Front view of Asian male architect sitting at desk while using mobile phone and architectural model, triangle ruler, pencils and blueprint on desk in modern office
    Closeup view of cooling pipe transferring liquid nitrogen surrounded by clouds of vapor on plant — Stock Photo
    Closeup view of cooling pipe transferring liquid nitrogen surrounded by clouds of vapor on plant
    Close-up of automobile tools in repair garage — Stock Photo
    Close-up of automobile tools in repair garage
    Indoors view of Pipeline in a water treatment plant — Stock Photo
    Indoors view of Pipeline in a water treatment plant
    Wind turbines under clear blue sky in countryside of Kansas, USA — Stock Photo
    Wind turbines under clear blue sky in countryside of Kansas, USA
    Front view of Asian male architect working on architectural model at desk in a modern office — Stock Photo
    Front view of Asian male architect working on architectural model at desk in a modern office
    Girl lying down to bed plays to smartphone — Stock Photo
    Girl lying down to bed plays to smartphone
    Skyscrapers, Victoria Harbor, Kowloon and Hong Kong Island, Hong Kong, China — Stock Photo
    Skyscrapers, Victoria Harbor, Kowloon and Hong Kong Island, Hong Kong, China
    Robotic welding system in modern industrial facility. — Stock Photo
    Robotic welding system in modern industrial facility.
    Man working in lumber yard — Stock Photo
    Man working in lumber yard
    Attentive robotic engineer working in warehouse — Stock Photo
    Attentive robotic engineer working in warehouse
    Group of male technicians in uniform working with alternative solar panels and preparing for installation near residential building — Stock Photo
    Group of male technicians in uniform working with alternative solar panels and preparing for installation near residential building
    Disassembled laptop parts on table in a repair centre — Stock Photo
    Disassembled laptop parts on table in a repair centre
    Close-up of dumper unloading mud at construction site — Stock Photo
    Close-up of dumper unloading mud at construction site
    Bottom view of Eiffel Tower — Stock Photo
    Bottom view of Eiffel Tower
    Green plants in test tubes, botanical research concept. — Stock Photo
    Green plants in test tubes, botanical research concept.
    Close-up of tools and rag at industrial mechanical workshop — Stock Photo
    Close-up of tools and rag at industrial mechanical workshop
    Two engineers inside a car going to work in the sunrise — Stock Photo
    Two engineers inside a car going to work in the sunrise
    Communications engineer using walkie-talkie at satellite antenna facility — Stock Photo
    Communications engineer using walkie-talkie at satellite antenna facility
    Exterior of curved concrete auditorium building of Oscar Niemeyer International Cultural Centre seen from river bank and reflected in water in Asturias in Spain — Stock Photo
    Exterior of curved concrete auditorium building of Oscar Niemeyer International Cultural Centre seen from river bank and reflected in water in Asturias in Spain
    Girl students assembling robotics in classroom — Stock Photo
    Girl students assembling robotics in classroom
    Man working with blueprints in the office — Stock Photo
    Man working with blueprints in the office