眼外肌从眶尖的腱环向前行附着于下列哪项组织()
A.角膜
B.虹膜
C.脉络膜
D.巩膜
E.视网膜
参考答案:D
对金-瓷修复材料的要求中错误的是()
A.由权威部门认定的符合口腔生物学材料基本要求的标准产品
B.两种材料应具有适当的机械强度和硬度
C.二者应各含1种以上的元素在高温熔融时实现化学结合
D.烤瓷合金的熔点应大于瓷粉熔点50~100℃
E.金属基底冠不能太薄
If it hadn’t been for the help of my English teacher, I the first prize in the English Writing Competition.
A.would not win
B.would not have won
C.would win
D.would have won