??????
??????
???????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
?????,?N?????????“??”???
?????,?N?????????“??”???
??
????:
1???????????:????????
2?????
3???????
4?????????
5?????????
????
6
%
???:??