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

2?????????

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

4??????????

5??????????

21????,?????????????????????????,?,????????,??????????????21???????????????????

9????24??????????????28??????,???21????????????????????,???????????,???????15?,???????????????????

???????????,??10??????????,????????????????2.3?,?????????????????????????????????????????????????????

????????????????????8????????,?????????????2441.3??????????????,????????21.8%,??52.6%,???

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???????????????????21??????????,??????????????,????,????????????

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?????????,????????,??,?????????????2100?????????,?????9????,?,???3.1??,???6500??????????????,???,???2????????

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