??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
?????????????????28???????? ????
?????????????????28???????? ????
??
????:
1?????VX?:????92?95?98?
2???????
3?????
4????????
5?????????
????
6
%
???:??