sign inkscape symbol signs symbols danger warning hazard toxic Sign Toxic clip art 登錄 有毒 標誌它符號標誌符號危險警告危險有毒
One of the famous yellow warning signs: explosion danger. Note that there are several signs with explosions - there's also "explosive atmosphere" and "explosion risk/explosive materials/compressed gas"... 危險 警告 登錄 危險警告標誌: 爆炸
computer virus symbol hazard malware trojan pbcrichton Pbcrichton Malware Hazard Symbol clip art 惡意軟體 危險 符號 Pbcrichton 惡意軟體的危險符號剪貼畫
sign inkscape symbol laser fire safety signs symbols hot surface danger biohazard irritant high flame free step warning hazard poison death explosion slippery watch cutting corrosive toxic voltage floor fork lift your acid crane overhead animal radiation Sign Hazard Warning clip art 登錄 危險 警告 標誌危險警告剪貼畫
red computer virus symbol hazard malware trojan pbcrichton Pbcrichton Malware Hazard Symbol Red clip art 惡意軟體 危險 符號 Pbcrichton 惡意軟體危害符號紅色剪貼畫
The symbol for radioactive hazard, following the official proportion specifications (radius R for center circle, 1.5R to 5R for blades of trefoil). Done in Inkscape. 輻射 放射性 危險 放射性
sign symbol biohazard orange warning hazard caution Biohazard Orange clip art 生物危害 橙色 標誌符號生物危害橙色警告危險警告
sign inkscape safety cartoon signs danger transportation truck warning hazard roadsigns fork lift trucks forklift Sign Fork Lift Trucks clip art 登錄 叉 電梯 標誌它安全卡通標誌危險運輸卡車警告危險路標叉升降機卡車叉車
Just another Warning sigh with exclamation mark. I made it symmetric with some gradient. The file in wiki (http://commons.wikimedia.org/wiki/File:Warning.svg) is not so symmetric. 危險 警告標誌 警告 警告標誌