A.基托与余留前牙的舌面隆突相密贴
B.基托为基牙颊侧卡环臂的对抗部分
C.避免压迫龈缘
D.应有一定的静压力
E.近龈缘区需缓冲
[单选题]+1,,1,( )。A.B.C.D.
[单选题]+1,,1,( )。A.B.C.D.
[单选题]+1,,1,( )。A.B.C.D.
[单选题]+1,,1,( )。A.B.C.D.
[单选题]+1,,1,( )。A.B.C.D.
[单选题]+1,,1,( )。A.B.C.D.
[单选题]+1,,1,( )。A.B.C.D.
[单选题]+1,,1,( )。A.B.C.D.
[单选题]+1,,1,( )。A.B.C.D.
[单选题]+1,,1,( )。A.B.C.D.