单项选择题
A.0.8~1.0mmB.1.0~1.2mmC.0.2~0.3mmD.1.2~1.4mm
A.1.0mm ±1mmB.15.0mm ±0.5mmC.10mm ±1mmD.20mm ±1mm
A.20mm/minB.15mm/minC.10mm/minD.5mm/min