单项选择题
A.≥0.3mmB.≥2mmC.≥0.1mmD.≥3mm
A.5mm,15mmB.10mm,5mmC.10mm,15mmD.15mm,5mm
A.30mmB.35mmC.40mmD.50mm
A.2.5~5.5mmB.2.4~5.6mmC.1.4~6.6mmD.2.6~5.4mm
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