??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
????:???????????0.5??
????:???????????0.5??
??
????:
1???????:??????????
2?????????
3?????????????
4?????100????
5???????
????
6
%
???:??