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

2????????

3????????

4???????

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??7?2????????(?? ?) ??????2?????,???7??8??????9??????????????????????????????????,?????????????????????

??,7??8?????????8?9?,????,???9??,????????,?????????????????9????????????

8???“??????????????????”,?????????????????

??????????,???????????????????????690?,??40??????????????,??????????????????????????????,???????86.67%?

??,???????????????????????????????????????????????????“?????????????????”??????????????????????,??????????(????)??(????????)?????????????????????????????????????????????152??????????????????,?????????????????????????????22.03%;?,?????????????170??????,??????24.64%;??????470??????,?68.12%?(??) ?????:??