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判斷題

土石混合壩是以堆石為主體的壩型。

答案：錯誤

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重力壩的橫縫是永久縫，縫中應(yīng)設(shè)止水設(shè)施。

答案：正確

土石壩做成鋼筋混凝土面板堆石壩，可允許壩頂溢流。

答案：錯誤

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