?? ?????“??????”??7.8??
????:1??????:???????
2?????vx
3????????
4???????????
5???????
????????11????????3???????? (?????? ??)??????????3?,??11??,????????????????“??”?7.8????(???????,??)?
???????????,???????????????,????????????2.48??2.35??????,???1.75???????,????????????
?,???“?????????”??????
??,????????10762?????????????,?????????????3??????692???????????????
?,??????????????“??????????”,???10?????????3???,???,4???
??,??97???,????,????????4????????????????
??,??,?20???,???
???????????????“????????”10????????????31???????????????????13?40?,????18??40??????????(??) ????:??