Ключевые слова: architecture, blue, build, building, business, cable, checking, circuit, construction, contractor, danger, electrical, electrician, electricity, engineer, engineering, equipment, facility, factory, hard, hardhat, hat, headphone, helmet, industrial, industry, job, maintenance, man, occupation, panel, plant, portrait, power, professional, protection, repair, repairman, safety, service, standing, technical, technician, tool, uniform, voltage, work, worker, workman, workshop,