2? 21? ??????? ??? ? ??? ?? ????? ????? ???? ??? ????? ???? ? ??? ?? ?? ?? ???? ???? ?? ???? ‘????’??? ????? ??? ????. 1?? 56? ?? ????? ??? ??, ?? ‘????’ ????? ???? ??? ???? ??? 43???.

? ??? ????? ????? ???? ???? ????? ?? ????? ‘????’?? ????, ????? ???? ???? ????? ????? ???? ?? ????? ???? ????? ???? ??? ??? ?????, ????, ???, ?? ? ‘????’??? ???? ???????? ???? ????.

???????? ???? ??? ??? ??? ??? ?? ????? ??? ????? ??, ??? ????, ?? ? ????, ???? ? ??? ????? ???? ?? 56? ?? ????? ?? ?????. ?? ‘????’ ????? ???? ???? ??? 78%? ??? ??-??? ????????, ???? ?? ?? ???? ???, ????? ?? ???? ??(暖通) ???, 2019? ?? ??????? ?? ??????.