单项选择题
榫头厚度与榫眼宽度的关系是()
A.比榫眼宽度大0.1-0.2mm
B.比榫眼宽度小0.1-0.2mm
C.比榫眼宽度小0.4-0.5mm
D.比榫眼宽度大0.4-0.5mm
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单项选择题
A.比榫眼宽度大0.1-0.2mm
B.比榫眼宽度小0.1-0.2mm
C.比榫眼宽度小0.4-0.5mm
D.比榫眼宽度大0.4-0.5mm
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