Ключевые слова: 3d, 911, alarm, ambulance, art, burn, burning, cone, contour, danger, emergency, equipment, fire, firefighter, fireman, flame, heat, help, hot, icon, illustration, isolated, isometric, line, linear, lineart, matchbox, matches, matchstick, mobile, outline, pail, phone, pink, police, safety, set, sign, smartphone, square, stick, symbol, telephone, tool, water, wood,