已知:① C(s)+O2(g)=CO2(g) △H1; ② CO2(g)+C(s)=2CO(g) △H2;③ 2CO(g)+O2(g)=2CO2(g) △H3; ④ 4Fe(s)+3O2(g)=2Fe2O3(s) △H4;⑤3 CO(g)+Fe2O3(s)=3CO2(g)+2Fe(s) △H5下列判断正确的是
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