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带饰面砖的预制构件做粘结强度检测时,每组试样平均粘结强度不应小于( )且每组允许有一个试样的粘结强度小于( ),但不应小于( ),则该组试样的饰面砖粘结强度合格。
A.0.4MPa,0.4MPa,0.3MPa
B.0.5MPa,0.5MPa,0.4MPa
C.0.6MPa,0.6MPa,0.4MPa
D.0.7MPa,0.7MPa,0.5MPa
参考答案:C
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