单项选择题
A.MOMB.PLMC.ERPD.MESE.CAD
A.0.2-0.5mmB.0.4-0.6mmC.0.5-1mmD.0.3-0.5mm
A.1/2B.1/3C.1/4D.3/4
A.1/5B.1/4C.1/3D.1/2
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