谨作参考.http://www.cqjingda.com/info3/http://www.baidu.com/s?ct=0&ie=gb2312&bs=%D4%F5%D1%F9%D5%D5%B9%CB%B2%A1%C8%CB&sr=&z=&wd=%CE%ED%BB%AF%CF%FB%B6%BE%D4%AD%C0%ED&cl=3&f=8