?? ?????????500??? ????????????????
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????:1???????100???:?????????
2????????95
3??????
4???????
5???150??????
??8??????????19???????(???)??????????«????»???,???11???26??????????????????30????????????????18???????,??100??,???????????????500???,??
??,??30%???,?500???????????60%,???,??????
???,???60?????????,???????????
???:?,????????????????????????????????????????????????????????????????????????,??????????????????100??????????????????????
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