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??? ???? ??????? ??? ???? ??? ???? ?????? ?? ???? ??? ???? ??? ??????, ??? ???, ????? ??? ????? ??? ??? ???????? ???? ????????? ??? ???? ???????????? ?? ??? ????? ???? ???? ???????? ??? ?????? ?????? ?????? ??, ???? ??? ???? ????????, ??? ????????, ???? ????????, ??????? ????? ???? ?????????
???????? ???? ????? ????? ?? 0.1-0.5% ??, ?? ?? ???? ??? ??? ??????? ?? ????-???? ????? ??????? ???? ???? ?????? ???
