?? ???????????????:??????????
????:1???????:?????
2????????????
3?????????
4?????????
5?????vx
????????1????????31?????? 1?????????31?????,???????????????????????,??????,????????,???????,?????????????
?????????????1?29???,????,?,??
??????,?,???
???????????????,????????????,?????,??????????????????????,?2????
?,????????????????????????????????,?????,????????????????????????????????????(??????????????) ??????????????:?????????