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女.57岁。口义齿2年，一直未吃硬性食物，小心谨慎使用，但上总义齿仍裂开。查：无牙颌，牙槽嵴中度丰满，腭中缝较平。义齿固位好，无翘动。上颌总义齿前部正中折裂，腭侧基托厚2mm。造成义齿折裂的主要原因是（）。A.
基托前部厚薄不均
B.
腭侧基托较薄
C.
人工牙排列偏唇颊侧
D.
腭中缝成为义齿折裂支点
E.
基托材料老化、变脆
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【简答题】II. 段落翻译 Simply stated, the Shanghai Expo was a once-in-a-lifetime experience. Maybe it’s because, after visiting the Expo, you would probably tell yourself that you never want to do this again. But o...
【简答题】段落翻译 Simply stated, the Shanghai Expo was a once-in-a-lifetime experience. Maybe it’s because, after visiting the Expo, you would probably tell yourself that you never want to do this again. But once ...
【简答题】Simply stated, the Shanghai Expo was a once-in-a-lifetime experience. Maybe it’s because, after visiting the Expo, you would probably tell yourself that you never want to do this again. But once you g...
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