问题
单项选择题
The notice which is based on original information is indicatedby（）nexttothenotice number.
A.a star
B.a dot
C.a dash
D.a circle
答案
参考答案：A
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The notice which is based on original information is indicatedby（）nexttothenotice number.
A.a star
B.a dot
C.a dash
D.a circle
参考答案：A
死髓牙，经根管治疗后以PFM全冠修复，经牙体制备取模后，在全冠初戴之前，尚需作的处理是（）