发布时间:2025-01-26 14:28:45
A、石灰水是氢氧化钙的水溶液,属于混合物,故A错误.
B、O2是由一种元素组成的纯净物,属于单质,故选项错误.
C、P2O5是由两种元素组成的且有一种是氧元素的化合物,属于氧化物,故选项正确.
D、盐水是氯化钠的水溶液,属于混合物,故选项错误.
故选C.
想建个小型球场 一切从简 地去哪买便宜 或者去哪租地可以建球场
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