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配制防水混凝土时,胶凝材料总用量不宜小于kg/盘,水胶比不得大 于

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A speech presenting the main speaker to the audience is called a speech of ____.

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A speech that gives thanks for a gift or an award is called a(n) ____ speech.

A speech paying tribute to a person, idea, or institution is called a(n) ____ speech.

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