?? ???????????????? ????????????
![](https://image.chezhanri.com/2020/0318/f84e8f52df182c6bd4b2b38f8c8bf07c.jpg)
????:1????????????:???????????
2????????
3??????????
4?????????
5???????????
???????7?????,??6????30?????????????????????????,??,??????????????????????????????????????????????,??????????????????,?????????,?????????
?,?????????“?????????”??????????????“????”,??????,??,???????????????????????,???????????????,????????????????????????????????????????????????????,???????????????????,??????????
???????,??,??????????,??????,???,????????????????????“???????????????+???????????????????”“????????????+????”“??????????????+??????????????”????????????????????????,???????????????1??????????????????????????????????????????????,???????????????????????????,?????????????????????????????,???????,?????
??,????????????????????“?????????????1?????????”?,??????????,??????????????,???????????????????????????????,????,?????????????,????(????) ???????????????:?????