??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
???:???? ????????????? ???????????
???:???? ????????????? ???????????
??
????:
1?????vx:??????
2?????????
3??????V
4???????
5?????????????
????
6
%
???:???