金属烤瓷全冠舌侧颈缘如以金属为边缘者,可预备成以下形状,除了()。
A.羽状
B.凹槽形
C.较宽的肩台
D.直角斜面形
E.与金属全冠边缘相同
参考答案:C
按要求写句子。
用so连接两个句子。
1. I got up at nine o'clock this morning. I was late for my class.
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2. I was ill yesterday. I went to hospital.
用then连接两个句子。
3. I put on my clothes. 1 washed my face.
4. I read English.I studied Chinese.
计算喷头质量与合格检验报告描述的质量偏差,偏差不得超过()%。
A.2
B.3
C.5
D.10