试题与答案

下列说法都正确的是 ①江河入海口三角洲的形成通常与胶体的性质有关 ②根据酸分子中

题型:选择题

题目:

下列说法都正确的是

①江河入海口三角洲的形成通常与胶体的性质有关

②根据酸分子中含有的H原子个数将酸分为一元酸、二元酸等

③“钡餐”中使用的硫酸钡是弱电解质

④在标准状况下,22.4LCH4与18gH2O所含有的电子数均为10 NA

⑤水陆两用公共汽车中,用于密封的橡胶材料是高分子化合物

A.①④⑤

B.①③④

C.①③④⑤

D.①②③④⑤

答案:

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