?? ?????3.46?????????????????????
????:1???92?95????:???????
2???????
3?????????
4????????????
5???????
????????????????(6???19????????????)??,?????????
?3.46???????,?????,
??????????????????????????????????????7??????(????????????????)2.13???,??,??;
??????????????????4???(????)0.69??????????????,????,?,????????????????????,????;
???????2????????0.64??,??,????????????????????????????
(??? ???????????? ??) ???:???