题目内容

下列属于水玻璃的技术特性有()。

A. 粘结力和强度高
B. 耐热性好
C. 耐碱性好
D. 耐水性差

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水玻璃只能在空气中凝结硬化的水硬性胶凝材料。

A. 对
B. 错

Coca-Cola________________ (sold/provided) Coke in cans for the first time in 1955

In the 1930s, Hollywood studios________________ (manufactured/produced) over 50 classic films.

IBM________________ (managed/designed) some of the first personal computers.

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