①4NH3(g)+5O2(g)⇌4NO(g)+6H2O(g)+9072kJ/K=1.1×1026
②4NH3(g)+4O2(g)⇌2N2O(g)+6H2O(g)+1105kJ/K=4.4×1028
③4NH3(g)+3O2(g)⇌2N2(g)+6H2O(g)+1269kJ/K=7.1×1034
其中,②、③是副反应.若要减少副反应,提高NO的产率,最合理的措施是( )
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