单项选择题
杠杆千分尺的分度值有()两种
A.0.001,0.002mm
B.0.002,0.004mm
C.0.004,0.008mm
D.0.01,0.02mm
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单项选择题
A.0.001,0.002mm
B.0.002,0.004mm
C.0.004,0.008mm
D.0.01,0.02mm
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