下列气体的检验方法中(括号内的气体是需要检验的杂质),合理的是请选择ABCD;g5Q'q9F*z;|)A2y2J)o({)d4X:C3h+X;Z
A. H2. CO2(CO)2y2J)o({)d4X:C3h+X;Z
B. H2(CO2. HCl)2y2J)o({)d4X:C3h+X;Z
C. O2(CO) 2y2J)o({)d4X:C3h+X;Z
D. CO(H2O. CO2)2y2J)o({)d4X:C3h+X;Z