(来学网)15号标准根管锉的锉尖直径和刃部末端直径分别是
  • A.
    (来学网)0.10mm和0.47mm
  • B.
    (来学网)0.10mm和0.45mm
  • C.
    (来学网)0.15mm和0.45mm
  • D.
    (来学网)0.15mm和0.47mm
  • E.
    (来学网)以上都不对