???,??????12?18???,??????????,????“????????????????????????”??????????,???????????????????????????????“??????”,???

????????????“??”???4300??????????,????153????????????????,??????????3000?????

???????????,?,????????40???23?????????,???????????20%???????,????100?????????150??????????????“21????????????????”,???“?”???,??????????“?????”???(???????????????????? ?? ??? ??? ??????????)

??:??????????????????

??“??????????”

?? ??????????????? ?????????

????:1???????????:???????vx

2???????

3???????

4?????????????

5?????vx

???,??????12?18???,??????????,????“????????????????????????”??????????,???????????????????????????????“??????”,???

????????????“??”???4300??????????,????153????????????????,??????????3000?????

???????????,?,????????40???23?????????,???????????20%???????,????100?????????150??????????????“21????????????????”,???“?”???,??????????“?????”???(???????????????????? ?? ??? ??? ??????????)

??:??????????????????