????????? ??????? ????? (NEB) ?? ????? ?? ?? ???? (????) ????????? ??????? ??? ?????? ???????? ????? ? [cite: 6]? ?? ????? ???? ????? ????? ??????? ??????? ????????? ?????? ???? ?????? ???????????????? ???? ?? [cite: 7]? ????? ?????? ?????? ???? ????????? ???? ???? ??????? ? [cite: 7, 8]?

??? ??????? ????????????????? ???? ?????? ??????? 'D' ?? ??????? ?????? ????? ??????? ??? ????? ??? ?????? NG (Not Graded) ?? ????????? (Absent) ???????? ???? ???, ?? ??????? ??????? ???? ?? [cite: 7]?

????????? ??? ? ????

??????? ???: ????? ??:?? ??????? ?:?? ????????

???????????? ??????????

• ???? (????) ??????? ????? ??? ??? ????? ??????? ????? [cite: 12]?
• ????????? ??????? ????????? ?????? ????????? ???? ????????????? ???? ???? ????? ???????? ????? ??? [cite: 16]?
• ???? ??????? ???? ????? ??? ??????? ????????? ?????????? ????? ????????? ??????? ?????? ????? ??? [cite: 17]?
• ????????? ???? ?????? ????? ????, ?????, ?????? ??? ?????????? ??????????? ??????? ????????????? [cite: 18]?
• ??????? ???? ?????? ???, ??????? ???, ??????? ????? ????? ???? ?????????????? ?????? ????? ????? ?????? ?? ????? ??????? ????? ?????? ??????? ???? ?????? [cite: 19, 20]?
• ?????????????? ?? ????? ????? ???????? ????? ??????? ????????? ???? ??????? ??????? ?????? ?????????????? [cite: 21]?
• ??????? ??????? ???????? ???? ????? ???, ??????? ????? ?? ???????? ?????? ?????????? ??????? ?????????? [cite: 22, 24]?
• ??????? ??????????????? ??????? ????? ??????? ????????? ??????? ? [cite: 23]?