??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
???????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
????????????:??,????????????
????????????:??,????????????
??
????:
1????????:??????????
2???????????
3???????????12????
4?????????????
5????????
????
6
%
???:??