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