A.燒結(jié)實(shí)心磚 B.燒結(jié)多孔磚 C.混凝土多孔磚 D.加氣混凝土砌塊
A.300mm;200mm B.300mm;400mm C.500mm;200mm D.500mm;400mm
A.30mm B.50mm C.70mm D.90mm