单项选择题
A.0.01mm B.0.02mm C.0.03mm D.0.04mm
A.1.0/100~1.5/100 B.1.5/100~2/100 C.2.5/100~3/100 D.3.5/100~4/100
A.0.02mm B.0.04mm C.0.06mm D.0.08mm
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