?? ???“?????”???“???????”
????:1?????????????:??95?
2?????vx
3?????????
4?????600?????
5???????
?11????29?????????? (? ????)11????29??????????,70???????,??????????????????????????????????????????,????“?????”??????“????”????,???????
?,?????????????????????????????????????,???“?”???,???????3.89??????????“????????????????”??????????????1.98??????90???????????“????”????,???4.3???,????
????,??????????????????,????????(????)?????????????????,???“????????”????,???“???????????”???,??????????????,????????5???????,??????
?,???“????”?????????????,????25????????????38?????,????????“??????”??????????,?????????,????,?????“????(????)??”????????,????????????(??)??“??”?
?????,????“?????????”“?????+N”??,???????????20?,??“??????????????????????”,????“??????????????????????????????????????????”?????????“???????????????”,?????“????????????????”????“???”??,“????????????????”?????“????”????,????(??) ?????:??????????