通风施工图纸可分为(  )。

通风施工图纸可分为(  )。

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When and where to build the new factory __________ yet.

When and where to build the new factory __________ yet.

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He talked at the top of his voice,__________he drew nobody's

He talked at the top of his voice,__________he drew nobody's attention.

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钢筋混凝土结构建筑的结构形式主要有(  )等多种形式。

钢筋混凝土结构建筑的结构形式主要有(  )等多种形式。

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