正确答案: A
SiO2是酸性氧化物,能与NaOH溶液反应
题目:下列推断正确的是
解析:A
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学习资料的答案和解析:
[单选题]隋唐时期,淮水以北新增的有利于农田灌溉的水利工程是( )。
通济渠
[单选题]---Do you want a lift home?---It’s very kind of you, but I have a much late in the office. I overslept this morning because my morning clock _______.
won’t gone