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

2????????

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

4?????

5???????

????????????

??????????????????????????1????6?????????? (????? ??)???????6?,?,??????????????????

????????????????????????,???2050?????????????????????,????????????????????????2019?????,?,?40%?

??????????????,???????????????????????????????490?????????,??7000??(1?????????2.4???)???

????,?????30%??????????????????????,?????????,??????

???????????????????,???,?????(?????????) ???????:???