Ключевые слова: benzine, black, chemical, cistern, company, concept, derrick, design, drop, energy, energy conservation, environment, flat, fuel, gas, gas pump, gasoline, gear, graphic, icon, icon set, illustration, industry, info, info graphics, motor, nature, nozzle, oil, oil barrel, oil drilling, oil rig, oil tanker, petroleum, refinery, resource, sign, silhouette, symbol, tank, tank car, tanker, technology, ui, wave,