A、CO<sub>2sub> B、O<sub>2sub> C、N<sub>2sub> D、CO
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、CO<sub>2sub>和CO B、CO<sub>2sub>和SO<sub>2sub> C、SO<sub>2sub>和N<sub>2sub> D、CO<sub>2sub>和N<sub>2sub>