????:1????????????:?????????

2???????vx

3???????????????

4????????

5?????????????

???12???????????23???? (???????????)????????????23????,??????????????????,????,??,???????,????????,??????????????????????????

?????12?23????????????? ?????????

?????????,?????????????????????82??????640????????,40?????????????????,???????400?,???????????

???????????????????????,????????“????????????????”?????,?????????????,????????203???????????????????????,41???????????,????????????????36?????????????????????,?????«?»,????????“?+??????+??”?????????????????????????????????????????,???????????????????????????13??7500????,????“?????????????????????”?

“??????????????????????,???????????”?????????????,?10???????????,????????????????«????»«???»(?“?????????????”)???????????

?????????,???????,“?????”?????,?,???,????????????????,?????3.35?????????????????????????????????286?/???????????????????,??101????????226?,??3??????????4??,?????687??1968?????????,????????????153???????812??????????,????????????1040????????????19433???????/?????????????“????”??,???,???

“?,??,????????????????,?????????????????????,???,??????,?????”??,????????????????,???????????,???????«?»?????????,??????,????????(?)

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