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

2????????vx

3???????

4????????

5????????

?????????11???26?? (??? ????)??26?????????

??????????????????????????“???????,???”????????????,???????????????????????????????????????????????????????????????6?????,??????12????????????

????????????,???????????????,????????????????????????????,???????,???????????620?????????,????????????????????20%?????78??????500???,86????????????????500?,?26%????????32%?

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

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

?????????????,???????«???»?(?????????) ???:???????????????