单项选择题
A.1:2.5B.1:3~5C.1:3~3.5D.1:4
A.19×25B.22×26C.15×20D.15×25
A.风槛B.挂空槛C.门龙D.连楹
A.1.5DX3/8DB.1.3DX3/5DC.1.2DX1∕2DD.1.5Dx1/3D
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