?? ?????????????
????:1????????:??????????
2???????????
3??????
4???????
5??????vx
?11??????????????26???????? (?????????? ??????)??,??????,???????,??????,???????
????????26???????????,11??25??5????????26??7???,???,??????????????????,???
?,?63????,51??,??????4.3??????????????????24??????10.7??,??6????
?1460??,???845??6?????????????,????????????????????????????????????????????????49??8???????
?????????27???????,?????????????????????????????19???????????15?,??23???????????????20??;??????????????????????????14???10??????????
?????????????????????,??????,???????????????????????????????????????????????
????????????,??,??6?????44?????(??) ??:???????????