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

????:???????:?????50???

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

????????????????????,?????3.1?????,???????14.7???????????,??????“??”??,??6???,???????11??,??????????????2???????????????????,????,??????,?????

???????????,?????????????????,????????????????????,????????????110???,????4.54????????????,?????15.1%,??1???????????????????????????????,?????????????????????????????????,??1100??????????,??1300????????????????????????????????????????????????,????????????990???????????????????????????????????

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