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Coal
Example. kartikaswani94@gmail.com structure of coal
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2) ????????: ???????? ????? ?? ???????????? ??? ?????????? ?????????? ????? ??????? ????? ???. ???????? ??????? ????????: ???? ??????????? (Btu) ????? ???? ??? ?? ???????? ???????????? ??? ???????? ??? ????? ????????????? ?????? ????. ???????? ????? ??????? ??? ??? ?????? ?????? ?? ????? ????? ?????? ?? ?????? ??? ???????? ?????, ????? ????? ????????? ???????? ?????? ????, ?????-????????, ?????? ??? ??????? ???? ??????.
3) ????????????: ???????????? ????? ???? ?????? ???? ??? ??????? ??????? (?????? ????). ???????????? ????? ???-??-????? ?????? ???????? ??? ??? ??????? ??? ????????????? ?????? ????.
4) ????????: ???????? ?????, ???? ???????? ?????, ?????? ??? ??????? ????? ??? ????????? ???????? ?????? ??? ???. ?????????? ?????? ???????? ??? ??? ?????????? ?????? ????? ??? ??? ?? ??????? ??? ????????????? ?????? ????.
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