单项选择题
A.0.003B.0.005C.0.01D.0.001
A.50-60minB.60-70minC.50-65minD.60-75min
A.0.1mmB.0.2mmC.0.01mmD.0.02mm
A.315~430B.335~450C.370~500D.410~540
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