【单选题】【消耗次数:1】
下列哪一过程不存在化学变化
氨溶于水
蔗糖溶在水中
电解质溶液导电
照相底片感光
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①  <img class="kfformula" src="20200629/1593409727229414.png" data-latex="{C1}_{2}" width="44" height="35"/>
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