??? ?? ????? ???? ????? ????? ?? ???? ????? ?????? ??? ?? ??? ???? ???? ????? ???. ?? ???? ????? ????? ???? ?? ????? ????. ??? ?? ?????? ?? ????? ???? ??????? ?????? ? ????? ???? ???? ???? ??? ?? ?? ??? ????? ??????? ????. ???? ???? uality assurance ????? ?? ???? ???? ????? ????? ????? ???? ???? ?????? ????, ??????/????/????? ???? ???