??????????? ??? ???? ???? ????? ???? ?? ??????????? ????. ??????? ???? ???? ??????? ????? ??????? ???? ???? ???? ??????? ??????????????? ????????? ???????? ??? ??. ?????? ????? ???? ???? ???? id???????? ???? ???????? ??? ??, ??? ?????????? ??? ?????????? ???? ?????????? ??.

Od????? ox???????? ??? ??????????? ??? ??????????? ?????? ????? ???? ???? ????? ????? ??:

(1) ????? ??????

??????? ????, ???? ?????? ? ????????????? ???? ????????? ??? ?????????? ??????? ??????????????? ?????? ?????? ??????? ??. Od????? ox????? ???????? ????? .??? ?????? ? ???, ????? ????????? ???????? ?? ??? ??. ??? ?????, ??????? ???? ???? ???????? ??????? ????? ub????? ??????? ?????? ????? ?? ??? ??????? ????????? ?????????? ??? ?????? ??? ??.

(2) ???? ??? ????????

? ?????? ??????? ??????? chemical??? ???????? ????????? ????? ??. . ??????? ????, ??????? ????????? ??? ??????? ????? ????? ???? ??? ?????????? ??????? ???? ??? ???? ?????? ??.

(3) ?? ????? ???? ?????? ??

??????????? ??? ??????????? ?????? od????? ox????? ????? ???????? ?????? ????? ?? ??? ????? ?? ????? ???? ?????? ??

()) ?????????????? ????? ????????

??????????? ??? ??????????? ?????? od????? ox????? ???????? ??? ?????? ???? ???????? ???, ??? ???? ????????????? ??????? ??? ??? ??.

(5) ????? ????? ??????????? ??? ???? ????????

? ???? ?? ?? ??????????? ??????? od?????? ??????? ????? ?????? ????? ????????????? ???????? ??? ??? ??. An????? ox????? ????? ???? 1500 ° ?? ???????? ????? ??? ??? ??, ?????? ????? ??????????? ???? 660 with ?? ??? ??? ??.

???????? ????????: ?????? ???, ????????? ??? ???? ???????????? ????????, ???????? ????, ??? ???????, ???????, ,???, ????????? ????? ??? ?????? ?????, ????? ????????? ??? ???????? ?????, ?????.