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