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

2?????

3???????vx??

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

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

????3?1.6????????????

??????????????????9???????????????1???? (? ?????????????????????)????????3???1?,?????????8???31?,?,????????????(?????????????????????)?1.6?????????????????????,??54%;?,????74%?

8???????29????????,????????????????? ??????? ??????????????????

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“??,?????????????,??????????”8?31?,??????

?????????7??19?,?,??,?????????????????????????????????????????,??????????????????????????,7???19?????????????????8??31??,???1400????????????????????????????,????????50%,?56%?(???????????????)

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