题目内容

按剖范围的不同,剖视图分为三种:()、()、()。

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断面图按其配置不同,可分为()、()两种。

()图常用来表示机件上某一结构在断面上的形状,例如轴上的键槽、孔的深度、肋板的厚度等。

Broadcasting news in English has some particular ______, such as its style, its structure, the choice of words and the ______ order of presentation, etc.

The standardized narrative procedure in news reporting is often called the ______ pyramid.

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