?? ???:??????????????????
????:1???VX??:??????
2???sn??
3??????
4?????????
5???????????
?12??????????26?????? 12????????????????26??,?????,?????????
??????????????,???:???,?????????????,????????????????????????????????????????????
????,???,?????????????????????????????????,??????????????????????????????,??????,???????????????????????
??????,????,???????????,??????????,?????????,??????????????,?????????????????? ??:???