??????? 1: ????? ??????? ?? 30% ???????? ???? ?????? ?70% ???????? ??? ?????.
?????? 2: ???? ?? ???? ?? ??? ?????? ??????? 2: ???? ????? ??????? ??? ??????.
?????? 3: ?? ??? ???? ????? ?? ??? ?????? A3: ??????? ???? ????? ??????? ?????? ??????? ???????? ???????? ???????? ??????? ????? ???? ??????? ??? ???.
Q4: ?? ????? ??? ????? ???? ????? ?? ??? ?????? A4: ???? ???????? ??? ?????? ???? ????? ?????? ??????? ????? ???? ?????? ????????? ?????? ?????? ??????.
Q5: ?? ??? ?????? ???? ????? ??????? A5: 12 ????? ??? ????? ????? ?????? ??? ?????? ????? ????.