???????--???????????????
???????????4????????????????????1?????????????????????????2???????1?????????????1?????????????1?????????????????1???????飨?????1???????壨??????2???????????????7???????????1??????1????????1??????????1????????1??????????????1??????к1??????????1???????2????
????????????????????????????????????????????????????????裬????????
?????????Ρ?????????????????壬????????????????????????????????????
???÷??????????40-50?裬?????????????????????
?????????????????????