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当前学科：中级建筑经济
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根据《建设工程质量管理条例》，在正常使用条件下，下列建设工程中，最低保修期限为2年的是()
A . 基础设施工程
B . 屋面防水工程
C . 电气管线工程
D . 供热与供冷系统
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