杆形卡环的固位臂进入基牙唇颊面倒凹的方向是从(  )。

杆形卡环的固位臂进入基牙唇颊面倒凹的方向是从(  )。A.远中方向 B.牙龈方向 C.验面方向 D.近中方向 E.侧面方向

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基牙的观测线是(  )。

基牙的观测线是(  )。A.牙冠轴面最突点的连线,不随观测方向改变而改变 B.牙冠解剖外形最突点的连线,不随观测方向改变而改变 C.牙冠解剖外形最突点的连线,随

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形成垂直食物嵌塞最常见的原因是(  )。

形成垂直食物嵌塞最常见的原因是(  )。A.邻面接触点不正常 B.牙有畸形舌侧沟 C.颌面均匀磨损 D.食物溢出沟加深 E.牙龈退缩

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第三篇 Is the News Believable?  Unless you have gone through th

第三篇 Is the News Believable?  Unless you have gone through the experience, yourse

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After his wife and children died, Paul turned to his work to

After his wife and children died, Paul turned to his work toA.ease his pai B.for

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