?? ?????????????? ????
????:1???????:???????????
2???????
3?????????
4?????vx?
5???????
????????11????????22?????????????????????(?????????? ??????????????????)??11????????????22????
??????????????? ??????????????????:??,?????,???????????????
?????:?????????????,??????????????,????????????,??????????
?????????????????????13???,?????????????????4????????????????,?,???????????,????????????????????????????“??????????”????????,??????????????????????????????,?,?????
?,??????,???????????????,????????????(??)
???:?????????