Ключевые слова: adult, air conditioner, building activity, caucasian, construction, construction worker, crafts person, efficiency, electrician, equipment, expertise, hardhat, helmet, industry, installing, instrument of measurement, job, maintenance engineer, male, manual worker, mechanic, men, one person, outdoors, professional occupation, protective workwear, real people, repairing, repairman, safety, work tool, working, young adult,