三张图片的要求 感谢大神们。
http://wenku.baidu.com/link?url=tQGbh46LZkSSEHHfpoc7NC6amoDXqopdPiYCSXl1W-YLglFeMmePFmoJNjfaHDcm1iIVmUukrENOWsCeeZd57tJdnpH1SiPx-VXezu7Vj0C
http://wenku.baidu.com/link?url=95GG-uVMToECaHDaoZolDnFzJO_9Hq6k1wMRuT0Jfn3LkAV5X2h7WvaH0x_F8KJo5JzqlPQQhHxlEM9tNjucE61jL5msmCT0UXMZCnxIgXG
http://wenku.baidu.com/link?url=Frt_QC9nV8i2fFn_4DTd6L340TxNqGBBghl5KpIB3tDw0LLgbFfhnXtsQwMy9MpbSfvuLtZNMeHtS0nC29rWejkttLYuc_dS0PcGYa1HMju
参考以上3个文档。