Ключевые слова: atom, barrel, bulb, color, color sticker, dam, energy, energy carrier, factory, fire, firewood, gas station, hydroelectric power station, icon, label, mechanization, oil, oil production, paper, paper sticker, petropump, pipe, plant, power generation, power line, production, railway carriage, recycling, set, smoke, solar battery, sticker, sticky label, sun, symbol, tank, winddriven generator,