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