(来学网)铸造支托凹制备时,其宽度应为前磨牙(牙合)面颊舌径的
  • A.
    (来学网)1/2
  • B.
    (来学网)1/3
  • C.
    (来学网)1/4
  • D.
    (来学网)3/4
  • E.
    (来学网)2/3
正确答案:
A