並前往http://w3.uch.edu.tw/jerrylu/1021_%E7%B6%93%E6%BF%9F%E5%AD%B8/Powerpoint/Ch07%20%20%E5%B8%82%E5%A0%B4%E4%B9%9F%E6%9C%89%E5%A4%B1%E9%9D%88%E7%9A%84%E6%99%82%E5%80%99.ppt