?? ????????????? ??????
????:1?????600:????
2??????????
3?????????????
4?????????
5?l????
?????????????11?????????????23?????? (?????? ?????????)????????????23??,????,24????????25??,??????????????????????????,???????????????,?????,??,25????25????????????????,???????????
??,?????????????,25??27????????,??3?4????????,?6???25?????????27?????????????,???????????26????27????????????????3?,27??????????-5??
??,?????,??????,????,????;??,???????,????????????,????????????,??????????????????????????,??????,??????,????,????,?????????????,???,?,????????;?????????,??????(??????) ????????????:??