挑战习题
1/5单选题
难度:

1.胶体的聚沉在人类的生产和生活中有着重要的应用.下列现象中,与胶体聚沉无关的是
A 江河入海口形成三角沙洲
B 向豆浆中加入硫酸钙制豆腐
C 在黄泥水中加入氯化钠,很快出现分层现象
D 阳光穿过茂密的树林产生的美丽光柱景象
提示1:
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正确答案:RA==
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