????:1????????:??????

2?????????

3???????????

4?????

5??????

????????????????8??28??????????????? (??? ?????)?????????????28??,200???????????????????????????????????????????2?????????????27????,?????????????????????????????????????????????????6?,???

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???,??????????????????6?????????,?????,??“??500?,???????????????”

?????,??????????????????7???,????142.5?,?????????8.9%?(???????) ???:????