勒腳的做法可在勒腳部位(), (1)貼天然石材 (2)抹混合砂漿 (3)抹水泥砂漿 (4)抹石灰砂漿
A.(1)(2) B.(2)(4) C.(1)(3) D.(3)(4)
A.150mm B.200mm C.250mm D.300mm
A.600mm B.300mm C.100mm D.50mm