材、涂膜的基层宜设找平层,整体现浇混凝土板及整体材料保温层采用水泥砂浆时找平层厚度分别为( )。( )
A.20-30mm 20-25mm B.20-30mm 20-30mm C.15-20mm 20-25mm D.15-20mm 15-25mm正确答案C
材、涂膜的基层宜设找平层,整体现浇混凝土板及整体材料保温层采用水泥砂浆时找平层厚度分别为( )。( )
A.20-30mm 20-25mm B.20-30mm 20-30mm C.15-20mm 20-25mm D.15-20mm 15-25mm正确答案C