This picture is __________ you.[ ]
A. with
B. at
C. for
答案:C
比浊分析法
乳磨牙慢性根尖周炎瘘管最常出现于()
A.龈沟排脓
B.根分歧部位
C.根尖区黏膜
D.舌侧黏膜
E.颊侧皮肤