??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
???492???????????,????????
???492???????????,????????
??
????:
1?????98?:????????
2?????????????
3???????????
4???????
5????????????
????
6
%
???:??