Ключевые слова: adjusting, adult, button, caucasian, closeup, computer, control, data, electrical, electricity, engineer, engineering, equipment, expertise, factory, finger, hand, human, illuminated, indoors, industry, knob, machinery, man, men, night, occupation, old, one, order, panel, part, person, pointing, power, professional, push, pushing, repairing, science, service, skill, supply, switch, technician, technology, touching, working,