单项选择题
A.3-8mm B.5-10mm C.8-15mm D.10-15mm
A.门、窗洞口侧边120mm范围内 B.后补的施工洞口和经修补的砌体 C.完整墙体中部 D.独立砖柱
A.1%-2% B.2%-3% C.3%-4% D.4%-5%
A.8N/s B.10N/s C.15N/s D.20N/s
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