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???? ??????? ?? ????:
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1. ??????? ???????: ???? ?????? ???????? ???? ??. ?? ??? '?? ???? ???? ????????????? ?? ?????? ???? ????? ????? ??. ?? ?????? ??????? ??? ?????? ??????? ???? ?????' ?? ????? ?? ???? ??.
2, ??????? ??????: ??????? ?? ???? ?????? ???????? ????. ?? ??? '?? ???? ???? ??????? ?? ?????? ???? ????? ????? ??.
3, ???? ???? ???????: ??? ???? ????? ??? ???????, ???? ????? ?? ????? ????? ??? ????? ??? ??? ?? ??? ?? ?? ????? ?? ???????? ?????? ???? ???? ????? ??.
4. ??????-???? ???????: ?? ??????, ??????? ??? ????-????? ??????? ?? ?? ????? '?? ??? ?????? structures?????? ??? ???? ???? ??.
Ro. ??? ?? ???????: ???? ?? ???? ???? ??? ??? ????? ??????? ?? ????? ????? ?? ?? ???? ????? ?? ??? ?? ??? ?????? structures?????? ??? ????? ??? ????? ????? ??.
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