单项选择题
A.50mm~70mm B.60mm~80mm C.70mm~90mm D.40mm~60mm
下列图形中,饰面砖是()
A.A B.B C.C D.D
A.200g/m2~400g/m2 B.200g/m2~500g/m2 C.300g/m2~400g/m2 D.300g/m2~500g/m2
A.GB13952 B.GB12925 C.GB12952 D.GB19252
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