?9?6??????(?????? ?????????????)9???6??????9??,???,?????????1??27??????????????????????????????????

9??6??9??,??????,????????????????? ?????????

??350?,??????????????????????????????????????????????????????????????????????????9????????????????????,???????????????38?????????????

????????????????????????,???,??????,??;?????????????,??,????

“????????,???”???????????????????????????,??????????,?????????“??????????????”?????????,??

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

??,????????????????????,?????,?????,???,??????????????????(?)

?????????:????????? “??????”_????

?? ??????? ??“????????”

????:1???????:???????vx

2???????

3??????????

4????????????

5???????

?9?6??????(?????? ?????????????)9???6??????9??,???,?????????1??27??????????????????????????????????

9??6??9??,??????,????????????????? ?????????

??350?,??????????????????????????????????????????????????????????????????????????9????????????????????,???????????????38?????????????

????????????????????????,???,??????,??;?????????????,??,????

“????????,???”???????????????????????????,??????????,?????????“??????????????”?????????,??

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

??,????????????????????,?????,?????,???,??????????????????(?)

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