单项选择题
车床横向进刀螺杆节距6mm,螺杆端手柄刻度环共300格,第一次切削后外径54mm,再进12格切削,工作物直径变成多少?()
A.50.2mm
B.53.52mm
C.52.76mm
D.51.6mm
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单项选择题
A.50.2mm
B.53.52mm
C.52.76mm
D.51.6mm
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