6??7??????????????,???????????

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

????,“???”???????????????,??????????“?????????”????????10????????????????,?????150????30????200????“??????????”???????????“????”?????????????,?????,??????????????????

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

(? ??)

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

??“?????????”????

?? ????????:“????”???????????,?????

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

2???150???????

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

4?????vx

5?????300??????

6??7??????????????,???????????

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

????,“???”???????????????,??????????“?????????”????????10????????????????,?????150????30????200????“??????????”???????????“????”?????????????,?????,??????????????????

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

(? ??)

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