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

2??????

3???????vx??

4????????

5??????398?????

??????????12???27????????????? (????????????? ????????????????)???12???????????27?????????

????:?????,?,????????,????????????????????,77%??,84%????????????????

?????????:??????????????????????????,???????????????????,??????????????????????????????????????????????????,??50?“??????????????????????”,???

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