选择题：This may seem strange, but theoretically glass should be ver

题目内容：

This may seem strange, but theoretically glass should be very strong because of the nature of its（）bonds.

A.ionic

B.covalent

C.interatomic

D.metallic

参考答案：

The product methods of the rapid-hardening Portland cements

The product methods of the rapid-hardening Portland cements include（）这是一个关于材料概论的相关问题，下面我们来看

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Nanoscience is the study of phenomena and manipulation of materials at（）scales, where properties differ significantly fr

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Li-ion batteries use an metallic lithium compound as the electrode material。这是一个关于材料概论的相关问题，下面我们来看

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The scanning electron microscopy（SEM）uses a focused beam of high-energy electrons to generate a variety of signals at th

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