Fe2O3·xH2O是典型的晶形沉淀。
参考答案:错
解析:Fe2O3·xH2O是典型的非晶形沉淀。
—________We should have been at the theatre ten minutes ago.
—Oh, dear! Let's hurry![ ]
A. Look at the time!
B. Give me a moment.
C. I'm stuck.
D. See what I mean?
我国陆地面积达______平方千米,在世界各国中,仅次于______、______,居第三位。