?? 12??1??????????????? ?
????:1?100?4?????:?????????????
2????400?3????
3???????v
4?????????
5???ktv???
????,????????????????12?????????????????????1?????????????????????????,???????????????????????,?????????????“??”??????,????,???????????,??????4??11?????????,12??3?,?,???
???4???????????1??,????????????????,????5???????????10?????,?????1.1??,????4.09??????,???42.6%?72.7%,???
(??? ???????? ??? ) ?????????:????????