?? ????????? ?????????290???
????:1??????:????????????
2??????????
3????????vx
4??????????
5??????????
?????9????29? (??? ??????????????????)?????????29??,????????????????,????,?????290????????
??????????,???????????????????????,?????,?????????????????????“?????”???????“????”????,????????????
?????????,??41??????,?????????????????1120???????,????????????14.4????????????100???????????,???1.2???,??????????????????,???????????,?????????????????????????????????????????100%????????????????,?????????
?????????????????? ????????,??,????????????????????????????,?,???????????1900????????????,??21.6????????????????????,????,???????“??????????????”?????????????????????????“????????????”,?????,???“??”??????
????????????????????? ???????????????????????,????????????,??????,????62???,??4%;????????????????????15???,????3.2%???51???????“?????+?”???????????,????????????2??????????????????????????,????10???1?????????????????????,???????????24??????????,????????????????????????????,??????????????(???)
???:???