A.0.3~0.4mm
B.3~4mm
C.4~6mm
D.6mm
E.7mm以下
[单选题]前腭杆到龈缘的距离( )
[单选题]前腭杆离开龈缘的距离至少是A.0.3~0.4mmB.3~4mmC.4~6mmD.6mmE.7m
[单选题,B1型题] 前腭杆离开龈缘应()A . 8mmB . 至少6mmC . 4~6mmD . 3~4mmE . 1.5~2mm
[单选题]侧腭杆离开龈缘的距离至少是A.1~2mmB.2~4mmC.4~6mmD.6~8mmE.8~10mm
[单选题]侧腭杆离开龈缘的距离至少是A.1~2mmB.2~4mmC.4~6mmD.6~8mmE.8~10mm
[单选题]前腭杆离开龈缘的至少A.0.3~0. 4mmB.3~4mmC.4~6mmD.6mmE.7mm以下
[单选题,A1型题] 前腭杆应离开龈缘至少()。A . 3mmB . 4mmC . 5mmD . 6mmE . 7mm
[单选题]舌杆到龈缘的距离( )