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