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????:1?qq?300?4??????:???????
2????????
3????????????
4?????QQ?
5?????spa
????(????????????)??????,????????????????????????????????????-??????,??????1000????,??????????????????????????????????,?????????????????????????????
?????????????,??????????????,??????????1Kb??????????,??????????10?????????????????????,?????«???????????»??????????????«???????????»?
?????,???,??????????????,???????????,???????????????????????????,?????1Kb?????????????,????????????98%,??????????????89.5%???????????
?????????????????,??????????,?,???????????????8?????????????????????,??,??????????????????????(?????????????????????????15?????????????)???????????????????????????????,???????????20??????10??????????????? ???????????????????????:????