?? ????“??+?????”?? ??15?????
![](https://image.chezhanri.com/2019/0521/20190521100936615.jpg)
????:1????????:?????????
2??????????
3?????
4??????????
5??????????
????????????????????????6??28????????? (?? ???????????????????????????)??28?????????????,???????????????“?????+??”?,?????“???????”,???????????“15?????????????????”,????“????”??????????????????
??2019????????????“?????????”??????????,?????????????????????????,????2023???????????????,?????????44%,????????80%???????????????????????
?????,????????????????????????,??????????????????,??,?????
28???????,??????,?,??????????????????????,??,????????,??,???????????????????????,?????,??????????????????????????
??,??,??????????1??????????????,18??????????????????????,N???????????????,???1+18+N??????????“15??????”,??,??????????????????????????????(??) ??:?????????????????