?? ?????? ????????????0?
????:1??????vx:????????
2????????????
3???????????
4?0731???????
5????????
???????????12??18?????? (? ?????)????????18??,???????????,??17?65?,?0.4??
???,??18?,???????,???????????,??????????,?????????????
??????,????17?6.1?,????????,??2.1??
????????,18????20????????????,???????,????????8???9?????????21?23??,??????1????????3??
????,???,19?????????20??,??????????:????2????????5????2????0???,?10?????12?,????????????????6???9??(?????????) ???:????????????