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

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.150~200mmD.250 ~350mm

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