单项选择题
A.小于0.1mm B.小于0.074mm C.小于0.01mm D.小于0.001mm
A.0.5-0.1mm B.0.5-0.074mm C.0.5-0.043mm D.0.5-0.01mm
A.大于1mm B.大于0.5mm C.大于0.2mm D.大于0.1mm