?? ???????????????????400??
????:1????????:??????
2?????
3??????????
4???????
5????????????
????????????????12???????20????????? (??????????? ????)????20??,??????????????????????????12?19?,??????400.4??????,??23%?
12??????????19???????,???? ?????????? ?????????,??,??????,???????????????????????????????????????????
???,????????????????????,?1??????????????1?11??????????27????????,??????????40??500.8????????,????500???,????????????????????????????????????,???????????????????????
??????????,?“??????????”????????????,??,????????????????,???????????????,???????????????????????????????,????????,???(??)
??:????