Ключевые слова: 3d, alarm, army, art, cabinet, chemical, circle, contour, danger, defense, emergency, equipment, extinguisher, fire, flame, fuel, gas, green, hose, hydrant, icon, illustration, isolated, isometric, line, linear, lineart, mask, military, outline, pipe, protection, protective, red, reel, rescue, respirator, round, safety, security, set, sign, symbol, toxic, war, water,