单项选择题
A.2-3mm B.2-5mm C.<5mm D.>2mm
A.0.5-1mm B.2-3mm C.>1mm D.<2mm
A.0.5-1mm B.2-3mm C.<3mm D.>2mm
A.25×60mm B.20×40mm C.25×38mm D.25×36mm
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