???8?????????????????21???? ??:????????????????“???”????“???”:???????“??”

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

??4?????,???????,?????????????????,?????“????”?,????3???

“??????????????,???????????,20????80???????,??????????”??

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

????,??????,?????????????????????????,«????????????»?????:?????????????????,?????????????????????????????????????????????,????

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

“??????????2003???,????,????3??,?????????,??????????,?,????????‘?????’????????????,????”?????????????????

“???,7???????????”?????,??????????????,???,?????????1100????,????????????

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

?10????????????,???????,????,???????????????????????????????,????????,“??????????????,????”?

“?????????????????,??4????”???????????????,???????????,?????????,???????,?????????,????

??????????????????5?????100??????,???????,?,???,???????“????????”?

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

??30????????????????,?????????????????????????,?????????????????????????????,?????????,???????“?????????????”???

?“???????????????????”???????

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

???????,?????1000????????1300???????,10????1??,?????300????????????,??3???

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

?,?,??????,?17.5????,???18???????????????????,???????“?????????????????????”?“????????????????????????????”,????????“???????????????”,???(????????????)

?????????:??? ??“????”

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

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

2?????

3?????????

4?????????

5???????

???8?????????????????21???? ??:????????????????“???”????“???”:???????“??”

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

??4?????,???????,?????????????????,?????“????”?,????3???

“??????????????,???????????,20????80???????,??????????”??

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

????,??????,?????????????????????????,«????????????»?????:?????????????????,?????????????????????????????????????????????,????

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

“??????????2003???,????,????3??,?????????,??????????,?,????????‘?????’????????????,????”?????????????????

“???,7???????????”?????,??????????????,???,?????????1100????,????????????

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

?10????????????,???????,????,???????????????????????????????,????????,“??????????????,????”?

“?????????????????,??4????”???????????????,???????????,?????????,???????,?????????,????

??????????????????5?????100??????,???????,?,???,???????“????????”?

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

??30????????????????,?????????????????????????,?????????????????????????????,?????????,???????“?????????????”???

?“???????????????????”???????

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

???????,?????1000????????1300???????,10????1??,?????300????????????,??3???

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

?,?,??????,?17.5????,???18???????????????????,???????“?????????????????????”?“????????????????????????????”,????????“???????????????”,???(????????????)

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