2??????????10?,????,???????????????(????)?????????????????,8??????,????,??,????

????,???,????3?????????????,???700????????????????????????????????????????????????????,???98.2%?

????????????????(?????????)???8?,????????70???52?,?????????20??????

???,???????2?????????????????????20????????1???????15???????????????????????????????,???????????500?????????,????(????? ??????????)

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

??

??:???????????,??????????,??????????????