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1. ?????? ??????

??????? ????????, ????????? ???????? ???? metals??? ?????????? ????????????, ????????????? ????, ???????? ?????, ?????, ?????, ????, ????? ?????????? ?????? ???. ???????? ???????? ????? ??? ??????????? ??? ??????? ????????? ???? ????????, ????? ???? ???? ??? ??????? ??? ????. . ?????? ?????? ?????? ?????? ????? ?????????? ???????? ??????? ?????. ????????? ???????? ????????? ??????????????? ?????????, ????????, ????????, ????????, ?????????????, ?????????????????, ?????????, ????? ??????? ?????????, ??????? ??? ??? ???????? ????? ?????? ???.?????? ?????? ????? ????? ??????????? ??????? ??????? ????? ????.

2. ????? ??????

????????? ???? ?? ???????? ???????? ????????? ??????? ???????????? ???????? ?????? ??? ????? ???????? ?????? ????.

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3. ??? ??????

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4. ry??????? ??????

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5. ????????? ??????

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