?? ????:????????????
????:1??????:?????
2?400??3????
3?????
4?????sn????
5?????
10??14?,??????????????????????????????????????????????? ???? 10????14??,???????????????????????????????????????????????? ? 10?14??,???????????????????????????????????????? ?? 10????14?,????????????????????????????????????? ???? 10???????????14?????????????????????????????????,???????????????????????????? ???? 10?14????,??????? ????????????????????????????????? 10?14?????????????????????????????????,??????? ? ???????????:???????????