题目内容
有关口腔溃疡的临床表现，描述正确的是
2021-10-20
A.多发生于口腔非角化区
B.溃疡面直径多为0.2～0.5cm
C.溃疡表浅、边缘整齐
D.局部有烧灼样疼痛
E.有自愈性，病程5～7日
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