Ключевые слова: advice, advisory, arrow, attention, black, bolt, cables, caution, current, death, electric, electrical, electricity, electroshock, emergency, energy, environment, flash, forbidden, hazard, high, icon, industrial, keep out, lightning, man, off limits, pictogram, plant, power, precaution, protection, restricted area, safety, security, shock, signboard, surge, symbol, technology, transformer, triangle, triangular, volt, voltage, voltage symbol, warn, wired, yellow,