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3. ???? ???????? ??????? ??????? ?? ?????
4. ?????? ????? ?????? ?? ??????? ????????? , ???? ???????? ??????? ?? ?????? ?? ????? ?????? .

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1. ??????? ?????? ?? ??? ??????? ??????
2. ??????? ????????
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1. ??????? ??????? ?????? , ??? ????????? ???? ?? %50? ?? ???? ???????"?"??"?"
2. ???? ????????? ???? ???????
(1)????? ???? ??????? ????? ???????? ?????? ?????? ?????? , ??? ????? ?????? ??? ????? ??????? ?????? ??????? ?????? PE .
(2)???? ??????? ??????? ?????? ?????? ???????? ?? ????? ?????? , ???? ?????? ??????? ???? ????? , ?????? ???? ??????? ?????? ? ???? ????????? ???? ??????? .
3. ??? ???? ??????? ???????? ?????
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