?? ??????????????6000???
????:1??????v:?????????vx
2???????????
3????????
4???929598?
5?????????????
?????????????11?????????????????25?????? (????? ?)????????????,??????25??,46???????????,?????????????????????6000????,??????????????58%?
??,?????120?????,??????811.32????????????????????????,??????????????????????????????110????,???????????????
?????????????????????????????????????,???????,????????202??????,????????????,?????????11??????
?,???????????????????????????????
1978?????????????,?????????????????????????????,????????????28.4%???????????????????????????9????68??????46?????????,????????????????????190???
46???,?????????????,???????????????????????????????,????????????,???????????(?????????????????????) ????:????????