单项选择题
A.0.02%;0.015%B.0.02%;0.010%C.0.002%;0.015%D.0.02%;0.15%
A.≤7mm;≤9mmB.≤9mm;≤8mmC.≤10mm;≤7mmD.≤9mm;≤7mm
A.12MB.11.3MC.11.2MD.10.60M