????:1???????vx:????????

2?????????50??

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

4????????????

5?????????

????6?5?????????? (? ?)5??,“?”???????????,??????????????

6??5???,????????? ?????

??????,?,???????????8500?????

???????????5??,?????,??5????????????????17????,???????????????7992??,????????93.7%???5.4??,??????????????454????????????????

“?????1400??????????????(1??=500??),???????”????,???100???????????????????,??????,????????10????????,???????????????????????????????????????????????,????

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

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

5???????????,??????????????????????????????,??????????????????????????,????????,?,???

?????,?????????????5?,?5476???????????,???????60.8%?(???????????????????)

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