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

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

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

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

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

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