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