Ключевые слова: adult, business, caucasian, checking, computer, concentration, concept, confidence, connection, contractor, control, electrician, electronic, employee, engineer, equipment, expert, facility, factory, foreman, helmet, indoor, industry, inspector, job, laptop, machine, maintenance, man, manager, manufacturing, occupation, person, plant, portrait, production, profession, professional, quality control, safety, scrutiny, standing, steel, system, technician, technology, worker, workman, workplace, workshop,