【单选题】【消耗次数：1】
下列哪一项是地下工程防水一级标准() 。
①
A.有漏水点，不得有线流和漏泥沙
②
B.有少量漏水点，不得有线流和漏泥沙
③
C.不允许渗水，机构表面无湿泽
④
D.总湿泽面积不大于防水面积的1/1000”
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相关题目
【单选题】
卷材防水质量检验的主控项目之一是：卷材防水层不得有渗漏和积水现象。此项检测方法可以是哪些？
①
检查出厂合格证、质量检验报告和进场检验报告
②
观察检查
③
雨后观察或淋水、蓄水试验。
④
观察和尺量检查
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