Ключевые слова: art, beaker, bottle, canister, car, chemical, chemistry, cloud, co2, color, colorful, container, contour, cylinder, diesel, dioxide, discovery, engine, equipment, fuel, gas, icon, industry, isolated, line, linear, liquid, location, map, motor, oil, outline, petrol, petroleum, pin, pipe, pop, popart, propane, pump, repair, service, set, station, tank, test, tube,