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