单项选择题
A.0.25mm±0.025mmB.±0.025mmC.0.25mm±0.07mmD.1mm±0.07mm
A.7.5mmB.5mmC.7.5mm 或5mmD.10mm
A.40〜40.5mmB.40〜40.25mmC.40〜40.1mmD.40〜40.15mm