男,30岁,缺失,可摘局部义齿修复,基牙为二类导线,采用的卡环是()
A.三臂卡环
B.上返卡环
C.对半卡环
D.间隙卡环
E.长臂卡环
参考答案:B
The winter vacation is coming! I’m going to Paris with my daughter.
A.Nice to meet you
B.It’s very kind of you
C.Thank you very much
D.Have a good trip
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