Ключевые слова: business, buying, chemical, connection, construction, control, corporate, development, economy, ecosystem, electricity, employee, energy, engineer, engineering, environment, examining, expertise, facility, factory, fuel, future, gas, gasoline, generator, helmet, horizontal, indoors, industrial, industry, infrastructure, innovation, male, man, manager, occupation, oil, person, petrochemical, pipes, plant, power, professional, refinery, safety, tablet, technology, work, worker,