??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
?????
??????
??????
??????
??????
??????
??????
??????
??????
??
CBA???(???)?????????
CBA???(???)?????????
??
????:
1?????????????:???????
2????????
3????????150????
4?????????????
5?????????30????
????
6
%
???:??