单项选择题
A.200mm B.250mm C.300mm D.350mm
A.50mm,70mm B.60mm,80mm C.70mm,90mm D.80mm,100mm
A.80mm B.90mm C.100mm D.110mm
A.凹阳台和凸阳台 B.生活阳台和服务阳台 C.封闭阳台和开敞式阳台 D.生活阳台和工作阳台
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