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????:1????????:????????
2???????sn
3???????
4??????
5?????????????
(??)??????
?????????6????????????8? (????? ??)8???,????
??????????????????????,???????????8??14????,???????4.5??8000???,????3.2????6000????
??,6??8?????(?14?),??????????????????????1.2??,?7000??,?58.3%,??????????????????“??”???;??3.2???,??71%,???
??,????????????“??????”??????,??????????????“?”?????????,??????(?14??????????????????????),?7000????,?87%,?????????,??????????????????5000?????????,???????2.1?,???????????46.6%?(??) ?????????????:?????