?? ????????“??”???:????????
![](http://n.sinaimg.cn/translate/698/w899h599/20190217/qg80-htacqwv9668087.jpg)
????:1????????:???????
2????????????
3???????
4??????????
5????????
?????????????,???????????????B?????????????????20%?
??????,???,??,??“??????????”?(???????????????? ????)
????????????:???????????
?????????????,???????????????B?????????????????20%?
??????,???,??,??“??????????”?(???????????????? ????)
????????????:???????????
????:1????????:???????
2????????????
3???????
4??????????
5????????
?????????????,???????????????B?????????????????20%?
??????,???,??,??“??????????”?(???????????????? ????)
????????????:???????????