???:???
??“???????”
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??????
??
?????????????“?”????????????
?????????????“?”????????????
??
????:
1????????:??ktv?????
2?k???????
3???????
4???????
5????????
???:???
????
6
%
???:??