????:1???????:???????????

2????????????

3???????????

4??????

5????????

??6??28?? (????????????????? ??????????????)?????????????????????????28?,?????????“????????+????????????????????????”?????????????,?????????????????????????????“??????????????”,????????????????“15???????????”,????“??????????”???????????????????????

??2019????????“?????”??,?????????????????????????,??????2023???,??44%,???????????????80%???????????

?,????????????????????????,????????,??,???????

28?,???????,?,????????????,??????????????????????,?????????????????,?????,??,????,??????

??,???????,??1??????????????????????,18?????????,N?????????,???????????????????????????1+18+N??????????????????“15??????????????????”,???????????????,???(????) ????:????????????????