现将金属镁和铝的混合物7．5g完全溶解于一定浓度足量的硝酸溶液中，收集反应产生的A 气体。向所得溶液中加入过量烧碱溶液，得到沉淀11．6 g。则气体A的成分可能是
| A．0.2mol NO和0.1mol NO2 |
| B．0.3 mol NO |
| C．0.1mol NO、0.2mol NO2和0.1mol N2O4 |
| D．0.3 mol NO2和0.1mol N2O4 |
相关试题
Now that we’ve discussed our problem, are people happy with the decisions _______? 
| A．taking | B．take | C．taken | D．to take |
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| A．beyond | B．without | C．of | D．in |
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| A．what | B．this |
C．that | D．which |
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| A．draw | B．strike | C．rush | D．push |
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