?? ???:??2????????????
????:1?100???????:??????????
2?????????
3?????????????
4??????????
5???????
??,6???????????15??????????18??????,??1????????2????6??????21?12??20?,????????24.10??,?????5.60?,??????40800??????????,?2?,?????????????
?????????????????,?????????????????,?,????????????????
(? ???? ?) ????:??????????????????