A.80mm;100mm B.80mm;120mm C.100mm;100mm D.100mm;120mm
A.300mm;250mm B.300mm;300mm C.500mm;250mm D.500mm;300mm
A.加強(qiáng)網(wǎng) B.拉結(jié)筋 C.構(gòu)造柱 D.施工縫