桩冠的冠桩的长度要求达根长的()A.2/3B.1/3C.1/2D.1/4E.3/4
桩冠的冠桩的长度要求达根长的()
A.2/3
B.1/3
C.1/2
D.1/4
E.3/4
相关考题:
A.1/4B.1/3C.1/2D.1/5E.2/3冠桩长度为根长的
桩冠的冠桩的长度要求达根长的()
A.2/3
B.1/3
C.1/2
D.1/4
E.3/4