水泥浆体在常温下会逐渐变稠直到开始失去塑性,这一现象称为水泥的()。
参考答案:初凝
There are millions of websites on the Internet and there _________ a lot of useful ________ on the websites.
A.are;informations
B.are;information
C.is;information
D.is;informations
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