(来学网)支托的近远中长度应为基牙面近远中径的
  • A.
    (来学网)磨牙1/3,双尖牙1/2
  • B.
    (来学网)磨牙1/2,双尖牙1/3
  • C.
    (来学网)磨牙1/3,双尖牙1/4
  • D.
    (来学网)磨牙1/4,双尖牙1/3
  • E.
    (来学网)磨牙2/3,双尖牙2/3