问题
单项选择题 A1型题
在磨光金属基底冠的过程中，如不慎使冠边缘过薄，技术员用普通瓷粉堆筑，烧烤后金瓷冠最易出现的问题是 （）
A.边缘短
B.无法就位
C.出现气泡
D.初戴时崩瓷
E.色泽不佳
答案
参考答案：D
解析：
基底冠边缘过薄而采用普通瓷粉堆筑时，容易造成烤瓷牙承受牙合力时崩瓷。
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在磨光金属基底冠的过程中，如不慎使冠边缘过薄，技术员用普通瓷粉堆筑，烧烤后金瓷冠最易出现的问题是 （）
A.边缘短
B.无法就位
C.出现气泡
D.初戴时崩瓷
E.色泽不佳
参考答案：D
解析：
基底冠边缘过薄而采用普通瓷粉堆筑时，容易造成烤瓷牙承受牙合力时崩瓷。
根据下列句子及所给汉语注释，在横线上写出空缺处单词的正确形式。（每空只写一词） 小题1:The ________ (行李) can be kept in the room near the waiting-hall before your train arrived. 小题2: Let’s ______(庆祝) him on his winning the prize.
小题5:He looked at himself in the mirror and began ___________ (刮) . 小题6:_____________(激动地), he ran to his father for a birthday present. 小题7:They furnished their house with red ________(地毯). 小题8:_________ (如今), many young people spend at least 3 hours on the Internet. 小题9:All of a sudden an idea ________(闪) in her mind that she decided to send an e-mail to him. 小题10: The man is in his _________(九十)，but he has a clear brain. |