???5??????????????

????:??????:????????????

?????2??????14???? (????????????? ??)?????????14?????????,??2???8???,????????50??13??????????,?5.3??????,???????????????75%?

?????????????? ?

??,????,??

?????????????????????,???????????770????????,??1????????10????1???????????22.5?????????????????6???,????????????????????????????????????,??

???????????????,???????????????????????,?,???????????????????,????

????????????,???“?????”?????“????????????”??????

???,??????????????3?,??????????????7500??,??????95%??????,???????????????

????????,???????????????????????96.8%,????????????2.2%,?1%,???????

????,???,?,?????????????????????????,??,????????????????(????????????)

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