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

2??????V

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

4??????????

5???????

??6??27????????????? 6????27???????????????,??????,????????????

?:????????????????,???,????????,???????????????????????????????

??????????????,?????,??,??????????????????,????????????????????????????????????,?,???????????????,??????????????,???????,??????????6??26???,???????6268????????????????13926????????????1215?(??)???131?????????,??????????????????,??????

?????????????????,??,??????????????,????,??????????? ??????????????:???????????