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【判断题】
在展成法加工中，采用一种模数的齿轮滚刀能加工不同齿数的齿轮。A.
正确
B.
错误
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举一反三
【单选题】________ you need to improve your English is more practice.
A.
That
B.
Whether
C.
If
D.
What
【单选题】化脓性脊柱炎的X线表现特征是（）
A.
常蔓延数个椎体，晚期增生明显，骨性融合成块
B.
常累及多个椎骨，可伴有双骶髂关节病变，晚期韧带钙化呈竹节样，椎体无破坏
C.
累及单个椎体，椎间隙正常，常有椎弓根破坏
D.
骨质增生及间隙变窄，椎体边缘硬化，无骨质破坏
E.
椎体破坏，可有死骨，椎体压缩呈楔形，椎间隙变窄
【判断题】Learning how to write sentences beautifully, borrowing sentence patterns from these good sentences is one of the good methods. However, in order to improve yoursentence writing, you need to improve yo...
A.
正确
B.
错误
【判断题】Learning how to write sentences beautifully, borrowing sentence patterns from these good sentences is one of the good methods. However, in order to improve your sentence writing, you need to improve y...
A.
正确
B.
错误
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