??????? ????????? ????
??????? ????????? ????
????? ????? ???????????? ?? ???? ????? ???????? ????? ??? ?? ????? ????? ??????? ???, ???? ?? ????????? ??????? ??? ??????? ??????????? ??????????? ?????????? ???????????, ????? ?? ??????????? ??? ???????? ??? ????? ??? ?????????? ????????, ????? ????????, ??? ?????????, ?????? ?????????? ??????? ???????????.
?? ??????????? ???? ??? 3-15% ??? ?? ?????????, ????? ???? ???? ??????? ???? ????-??????? ??? ??? ??????????? ??? ???????????????.
