发布时间:2025-01-26 14:38:16
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.
飞利浦的电动牙刷怎么清洁还有关于充电是充多久一般充满能用几次
2025-01-26 14:38:16 2025-01-26 14:38:16我看到吃早餐的地方有很多小蒸笼是蒸小包子的我想去买应该怎么跟老板说啊
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