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

2????????

3???????

4???150????????

5????????????

9???27???,??,?????????????????“?”???,???????????,????????????????????,???????175?,?????????18.5%???10???1??????????????????6????????????????????,??????????????????????????????4.3???8.3??4.5??1.7?????????????????????,???????????????????????????????????????????????????????????32??10.4??8.1???7.5????,?????????????????????????19.9????????17.3??11.8??8.9???????

?,?,???????????????????;?????????????????????????????????????,??????,???,?????(???? ??? ?????? ?????)

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