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