?? ?????? 7??????????
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????:1?????:????????vx
2????????
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??:???????????????????????????? 7????:????
????(?????????????????????):????????(8??????????18?)?????????,????,??????????,?????,????????????
??????:7????,?????????,????????????6%,??????1.7???
???????????????,???13.3%??????????????????
??????????????????????????????8.5%,??????????2.8??????,???????????????????7.2%??????14.8%,?????????????????????????,?????8.5%?11.7%,???
???????????,????????????????7????????????,??7.3%,????????????????????????????8.5%,??????????67.4%,????????????????0.7??? ?????????????:?????????????