?? ???????????????:???“??”
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????:1?????:??????1000
2????????
3??????
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5???????
????6???????????????20?????????????? (????????????????)?????20????????????“???????????????????????????????:?”????,?????,??,??????????????????????????,??,?????????????
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????????,??????????????????????40%,??????30%???,????????????????,???,??25%,???????40%?
???,??????????????????,??,????,???????
??,????????????????????,??????????????,??????????
??????,???????????,?????????????????,?????,????????????????????,?????????????????,?????????20%,?????????????????????????,???????????????????,?????????????????????????????????????
??,??????????,?????????????????????????,???????????????????????????????????????
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