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