下列疾病中有自限性的是
A．癌性溃疡
B．结核性溃疡
C．创伤性溃疡
D．重型阿弗他溃疡
E．以上均有
参考答案：D
- Thank you very much for the beautiful present.
-_____________ [ ]
A. Don't say that.
B. I think so.
C. I am glad you like it.
D. OK.
插削主要用于加工那些表面？
