选择题:安装大规格饰面板材时,灌注砂浆,每层灌注高度宜为A.200~250mmB.300~400mmC.15

题目内容:
安装大规格饰面板材时,灌注砂浆,每层灌注高度宜为
A.200~250mm
B.300~400mm
C.150~200mm
D.250 ~350mm
参考答案: