????:1???sn??:???????????

2???????????

3???????

4?????

5???????????

??????????2??????18??? ??????18??,????????,???????

??,?????“??,?????????,?????,???????????????”

??????,?????,???????????????“????”,??“?????????????????????”“?”????,???40???????????????????????????

???,?????????????,??????????,???????,“??????????”

??,????????,?????11???????????,??15.7??3.3????????????5.6????????????????CBA??????????(??????????) ???????????:????????????