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2???????????

3??????

4???????????

5????????

??6???????11??? (?? ??)??????????????????????11???????,??????????,???33.59?,?8.84??,??36%?

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?6??8?????6?????10????????,???3?,?11.19??????,???6???10??,??11.49????????????,??????????????20.47????????,??13.12???

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?36%??? ??????????????????????

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