A、O<sub>2sub>,N<sub>2sub>,CO B、CO,CO<sub>2sub>,O<sub>2sub> C、CO<sub>2sub> D、N<sub>2sub>,CO,CO<sub>2sub>
A、O<sub>2sub>,N<sub>2sub>,CO B、CO,CO<sub>2sub>,O<sub>2sub> C、CO<sub>2sub> D、N<sub>2sub>,CO,CO<sub>2sub>
A、Fe<sub>2sub>O<sub>3sub>+3H<sub>2sub>SO<sub>4sub>==Fe<sub>2sub>(SO<sub>4sub>)<sub>3sub>+3H<sub>2sub>O B、Cu(OH)<sub>2sub>+2HCl==CuCl<sub>2sub>+2H<sub>2sub>O C、CaCO<sub>3sub>+2HCl==CaCl<sub>2sub>+H<sub>2sub>O+CO<sub>2sub>↑ D、BaCl<sub>2sub>+H<sub>2sub>SO<sub>4sub>==BaSO<sub>4sub>↓+2HCl
A、CO、CO<sub>2sub>、O<sub>2sub> B、CO<sub>2sub>、O<sub>2sub>、CO C、O<sub>2sub>、CO、CO<sub>2sub> D、O<sub>2sub>、CO<sub>2sub>、CO
A、C+O<sub>2sub>→CO<sub>2sub>+Q,C+O<sub>2sub>→CO+Q B、CO<sub>2sub>+C→CO-Q,CO+H<sub>2sub>→CH<sub>4sub>+H<sub>2sub>O+Q. C、C+O<sub>2sub>→CO+Q,C+H<sub>2sub>O→CO+H<sub>2sub>-Q D、CO<sub>2sub>+C→CO-Q,C+H<sub>2sub>O→CO+H<sub>2sub>-Q
A、C+O<sub>2sub>=CO<sub>2sub> B、C+O<sub>2sub>=CO C、CO+H<sub>2sub>O=CO<sub>2sub>+H<sub>2sub> D、C+H<sub>2sub>O=CO+H<sub>2sub>
A、CH<sub>4sub>+2O<sub>2sub>=2H<sub>2sub>O+CO<sub>2sub> B、2CH<sub>4sub>+3O<sub>2sub>=4H<sub>2sub>O+2CO C、CH<sub>4sub>+O<sub>2sub>=H<sub>2sub>O+CO<sub>2sub> D、CH<sub>4sub>+O<sub>2sub>=H<sub>2sub>O+CO