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

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

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

4?????300???

5??????????

??????????????10???8????? (??? ??????)?8??????,?????,????????,???“????????????????????”??

????,????????????????????63??????13.7??,???????????????46.8%?63.3%,??????10??5??????2????????,?????2.26???,????

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

“??‘????’??,????”???????,10????1???7???,????34.8??????,???28%,?55.2%;??8.5?????????,?????61.6%,???????????,????5.4?????????????????????,???

????????????????????????“???”????????,??????“?????”??????“????”???????,??????????,?27.6????????????,???????????81.1%?

“?????”??????????????????????,??????????????,????30????????????1.35???????,????1928?????“?”????????????????,??????22.85????(??) ???:?????????