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A skilled technician checks heating systems in a utility room. He wears safety gear and uses a device to ensure proper operation during maintenance.
A business person updates software, installs an update process, and upgrades the software version concept. Software updates or operating system upgrades
The temporary lights, signage are to manage traffic flow around an obstruction or ongoing work, such as utility upgrades. Temporary roadworks. traffic management systems in place. Traffic Control.
Serviceman repairs electric battery pack of hybrid car
Electrician installs new electrical panel in home. Man electrician performs installation work. Electrical upgrade, improvement of home

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