【判断题】【消耗次数：1】
设置排水管道最小流速的原因是防止管中杂质沉淀到管底 ，冲刷管道壁面污物。
①
正确
②
错误
参考答案：
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给排水管道安装工程量计算主要采用消耗量定额第八册《第八册给排水、采暖、燃气工程》第四章给排水管道安装,适用于室内外生活用给水、排水、雨水管道安装，共（ ）个子目。
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