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

2??????

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

4???????

5???9598??

?????(???????):6????17??????30?????????????????,??????????????????,53%?????????????

???,?????????3.31???????????,???“?”??????????????“???????????????”????“????”????4.8?????????????,??12.8??,?????????1978??5.05%????????13.84%?????4????????????,??????????515??1000???????,??,2019????????????????????2000?????????40%??????????,?????????????,4.5??????

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

???:?????????????