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Two students work on sweating a joint during a class in AC installation and  repair
Close-up Air conditioner technician hand check  fill refrigerant liquid and maintenance condenser unit, Home care service
Portrait of an industrial electric engineer standing by power supply inside oil refinery.
Electric technician working on a fuse box or switch board, using pliers or engineering tool. Male electrician doing complex installation and connection of electrical equipment and wiring cables.
Paramedic (30s, mixed race Hispanic and Caucasian) standing at the rear of an ambulance.
Electrical maintenance technician working for checking and monitoring status high voltage circuit breaker switchgear electrical distribution substation in the factory
Truck mechanic is checking safety using digital tablet.
Engineers inspected the electrical switchboard and verified the operational voltage range. Technician setting electrical in inverter solar panel room
Male Worker Inspecting Water Valve For Leaks In Basement
Engineer is working in the control room. At night time. Engineering concept.
Engineers working in the main control room of a state-of-the-art chiller HVAC system.
A male safety officer is checking the safety of the equipment
female boiler room operative
Industrial worker inspects turbine pre-engine start in industrial setting. Showcases industrial workers focus on safety, efficiency. Ideal for highlighting an industrial workers expertise.
Marine engineer officer controlling vessel engines and propulsion in engine control room ECR. Ship onboard maintenance
Aircraft engineers in reflective vests examining helicopter engine, using multimeter, close view. Air vehicle mechanics in protective workwear working in hangar, side view
Electrician builder at work inspecting cabling connection of high voltage power electric line in industrial distribution fuseboard
A female engineer works at the construction site of a chemical plant under construction
Male electrician worker checking operation electric system at the solar farm. Male electrician engineer holding laptop computer working in solar panels power farm
Professional male mechanic working in a tool shop
Engineer or technician work checking Fire suppression system and fire equipment. Engineer check red generator pump for water sprinkler piping and fire alarm control system
Boiler Room - Full
Professional plumber installing plumbing manifolds at home, home improvement and repair concept
Aircraft mechanic fixing jet engine and using multimeter, mid shot. Male engineer examining helicopter, side view
Marine engineer officer in engine control room ECR. Seamen's work. He starts or stops main engine of ship
control room engineers
Side view of a professional aviation mechanic performing a routine inspection of the aircraft bottom
A maintenance engineer with a white hard hat is working in the control room of the building's cooling system and holding the blueprint to inspect the process.
male caucasian operator operating industrial printing press
Young Man Controlling Heating Plant
Free Images: "bestof:Navy 080213-N-9123L-003 Gas Turbine Systems Technician (Electrical) Fireman Jong Shin and Hull Technician 2nd Class Brian Yonkovich look for damage and use a"
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US_Navy_071106-N-7981E-172_Gas_Turbine_Systems_Technician_(Electrical)_3rd_Class_Chris_Withers_monitors_the_ship's_online_generators_while_standing_watch_at_the_electrical_plant_control_console_in_damage_control_central.jpg
US_Navy_090505-N-3215T-029_Gas_Turbine_Systems_Technician_(Mechanical)_Fireman_Lee_Wynne,_right,_from_Dallas,_combats_a_simulated_class_alpha_fire_as_team_leader_Boatswain's_Mate_2nd_Class_Wesley_Richardson,_from_San_Angelo,_Te.jpg
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