单项选择题
A.≤2mmB.≤1.5mmC.≤1mmD.≤0.5mm
A.正方形B.长方形C.菱形D.矩形
A.880mm*380mmB.885mm*385mmC.800mm*300mmD.805mm*305mm
A.40mm*60mmB.40mm*55mmC.40mm*50mmD.40mm*45mm
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