並前往https://hre.pro.edu.tw/storage/download/teaching_material-ch-35-1497419740/%E5%9C%8B%E5%B0%8F%E6%95%99%E6%A1%88-%E7%B6%93%E6%BF%9F%E5%8B%95%E7%89%A9%E8%88%87%E6%A3%AE%E6%9E%97%E4%BB%A5%E5%8F%8A%E5%85%A8%E7%90%83%E6%9A%96%E5%8C%96.pdf