?????11???????????????????23????(???)???????????23?????????

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

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

????????????????????????????? ??????????:??????????????? “?????????”????

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

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

2?????????????

3?????vx

4?????

5?????

?????11???????????????????23????(???)???????????23?????????

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

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

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