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