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

2???????

3?????

4?????vx

5??????

??????????12????????????????22???? (? ?)????????(???????“?????????????”)22??????????,??,???

??,??????22????????????????????8??,???(????????????????)??????????????????1140??????????????,???7??(15??????????/???)???,??????20???,??????,?????24?26???

?,?,????????22??24????????,??6?????????????8?????????9????????????????,?????????????????????6???????????7?????????????????????8?????????;???????????7??????????9??????????????10??

?,??????????????????,???????????????????,????????????????????????????,????,?,????,????????????????

??,???????????????????????????????????????????????????????????????,?????????,?????????????????????????????????????????????,????????????,?“????,?????”??,??????????????(???) ???:??????????