????:1?????vx:??????????

2?????

3???????

4?????????????

5?????????

????,??,???,??????????,???????,????????????????,???????“?????????”??????????????,??????,???

?????????????,?????“?????”??,??????,???,?????????,??50%???,????50%???????????90%??????????????????????,????,??????????????,?????8???,?????????1?????????????????,???????????,??,?????????????????????,??????????,??????????????????????????????????????????????????……

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

??????????????,??????????????????????????“??????????????”????45???,?????????????,?,?????????“??????????”????????,?????????4.8????????????????,?????1978????????5.05%?????13.84%,61%?????????????????????????,??200????????4800?????????,1500???????????????????

?,????????73??????????????????????????“?”?????,???????????(20212030????),?????????????,???????,??????????,??????,?????????????????(???????????????? ????) ??????:??????????????