Ключевые слова: battery, building, car, chimney, city, coal, eclectic, ecology, electricity, extraction, factory, fuel, gas, hydroelectric, icon, icon set, illustration, industrial, industry, lamp, minerals, nuclear, oil, pipe, pipeline, plant, pollution, power, product, production, red, refueling, reservoir, servicing, sign, solar, stalk, station, storehouse, structure, symbol, tank, transmission, truck, water, well, wind, work,