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

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

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

4????????

5???????

??????????????11??????????????22???????? (??????????)????,???????????,?,???????,?,?????????????,???

?????????,????????????2.87????????,?????6000????,?????3????????,????????4600????????????,????6?????????????,??1???6?????????????15?????

??,?????

“????????????,????????????????????‘????????????’,???????‘??’???????????????????????”????,???????,?????,???????????,???????????6??,????,?“?????”???????????????,???1.5???????

????“????????”,2011?????????????,????200??,?????,????????????

“?????????????????????????????????,????1??????????”??????????????????????????,????????????,???500???????????,????????15??????,?????????6????1????????

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

???,???10?????????????,???????????????????????,????

??????,???????????????????????,???,???“????????????+?????”????,???,???????????????,??????????(?????)

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