题目内容
断面图按其配置不同，可分为（）、（）两种。
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（）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.
That is to say, the most important information is usually included in the news ______.
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