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

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

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

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

5???????vx

??12???10??? (???????? ???????????????????????)“????,???????????50???????????????,????1??????????????????,????????!”12????10??????,?????????

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

?????????????????,????109.5???????,?????????????????????????10????????????,??????4.45??????????4.27??,??????????????????54.1%?86.6%,????????????????????????“???”,????????,?????,??49??????????????,??????

????,????????????????????????????????57?????????2000????,?????,????17.77???????4.64????????;??????(???????)???????????,??,???“??”????????

“????????????????,????,??”??,?142??????????,??????????20%,???13?????

??,???????,??2.5????1???,???????????6?????8??????????10????,??“??????????????????????????????????????”??????,?????????,????????????????????2000??,?????????(????) ?????????????:???