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??   2010-11-20 20:22


???   2010-11-20 20:28
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1.?1????????????2%??2?????????????????
2.?????2?????????????????8?????????????????????????
3.????5?????????????0.5-1???????(9?2)??2/3(?0.6)
4.10122???00000?????????0.510????
5.??????????
6.???1/3???i???????????
7.12??????????
8.???????????1/3???????????...