Ag2o的分解反应为Ag2o(s)= 2Ag(g) + 1/2O2(g)。当用Ag2o(s)进行分解时,体系的组分数、自由度数和可能平衡共存的最大相数分别为 ( )
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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