问题
单项选择题
患者，女，20岁，四环素牙，牙冠稳固，牙周情况较好，来院就诊要求进行美容性修复，经临床备牙，制作
PFM修复体。
技师塑瓷、烧结完成后发现瓷表面光亮度 不够是因为（）
A．烧结温度过低
B．塑瓷时吸水不够
C．真空度不够
D．烧结时间过长
E．烧结温度过高
答案
参考答案：A
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患者，女，20岁，四环素牙，牙冠稳固，牙周情况较好，来院就诊要求进行美容性修复，经临床备牙，制作PFM修复体。
技师塑瓷、烧结完成后发现瓷表面光亮度 不够是因为（）
A．烧结温度过低
B．塑瓷时吸水不够
C．真空度不够
D．烧结时间过长
E．烧结温度过高
参考答案：A
| 补全对话。 | |
| A: Wasn't that a great talent show? B: Yeah. A: 1 B: Oh, I thought Eliza was the best. She's an excellent piano player. A: Yeah, she was great. 2 B: Me, too. I couldn't stop laughing! 3 A: Yeah, I'd say she was the most creative actress! I don't know many people who can play the guitar upside down. B: 4 A: Oh, Dennis! He was terrible! He can't juggle at all. B: I know. A: 5 B: Our math teacher was the most outstanding.
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