?? ???????????????????2.7????
????:1??????????:?????????
2?????????????
3???????
4???????
5???kb???
????????????????2??????5???????????? (????? ????????????)????2????5?????????????????????,??????(1???28????2????????4?????????),????????????(????????????????????)?47??2.7????????????,?????110%?
1??????????????27?,??????????????????????? ????,??,?,?????????????????
??????,???????,??????????????????97%,???????,????????????????????????????????????????????????????????????
“???????????????????,?????”???,??
????????????????????,????????,????????,???????????????????,???????????????????????????????,???(??????????)
??:??