固定义齿基牙临床冠根比例理想的是（）

A . A B . B C . C D . D E . E

A .https://assets.asklib.com/images/image2/2017042414170413048.gif B .https://assets.asklib.com/images/image2/2017042414170612351.gif C .https://assets.asklib.com/images/image2/2017042414170823188.gif D .https://assets.asklib.com/images/image2/2017042414171195006.gif E .https://assets.asklib.com/images/image2/2017042414171325743.gif

A . A B . B C . C D . D E . E

A . 基牙牙冠形态B . 基牙牙根形态C . 桥体https://assets.asklib.com/psource/2015082210470661626.jpg 面形态D . 桥体龈面形态E . 固位体轴面形态

A . ['https://assets.asklib.com/psource/2015091116231394333.gif B .https://assets.asklib.com/psource/2015091116231586994.gif C .https://assets.asklib.com/psource/2015091116231684681.gif D .https://assets.asklib.com/psource/201509111623183416.gif E .https://assets.asklib.com/psource/2015091116232516202.gif

A . ['https://assets.asklib.com/psource/2015091115415015688.gif B .https://assets.asklib.com/psource/2015091115415215494.gif C .https://assets.asklib.com/psource/2015091115415386369.gif D .https://assets.asklib.com/psource/2015091115415522909.gif E .https://assets.asklib.com/psource/2015091115415696310.gif

A . 中深龋坏患牙 B . 扭转错位牙 C . 髓角高尖的年轻恒牙 D . 向缺牙间隙倾斜的牙齿 E . 牙体大面积缺损患牙

A . 连接强度 B . 固位力 C . 支持力 D . 美观性 E . 舒适度

A . A B . B C . C D . D E . E

A . ['https://assets.asklib.com/psource/2015091117211756931.gif B .https://assets.asklib.com/psource/2015091117211885805.gif C .https://assets.asklib.com/psource/2015091117212049892.gif D .https://assets.asklib.com/psource/2015091117212150659.gif E .https://assets.asklib.com/psource/2015091117212290422.gif

A . 中深龋坏牙 B . 扭转错位牙 C . 髓角高尖的年轻恒牙 D . 向缺牙间隙倾斜的牙齿 E . 牙体大面积缺损的患牙

A . 1：2 B . 2：1 C . 3：1 D . 1：1 E . 1：3

A . A B . B C . C D . D E . E

A . A B . B C . C D . D E . E

A . A.1∶4 B . B.1∶3 C . C.1∶1 D . D.1∶2 E . E.1∶6

A . ['https://assets.asklib.com/psource/2015093011533069476.jpg B .https://assets.asklib.com/psource/2015093011543698169.jpg C .https://assets.asklib.com/psource/201509301153339491.jpg D .https://assets.asklib.com/psource/2015093011533745264.jpg E .https://assets.asklib.com/psource/2015093011534042338.jpg

A . 连接强度 B . 固位力 C . 支持力 D . 美观性 E . 舒适度

A .https://assets.asklib.com/images/image2/2018042615212319223.jpg B .https://assets.asklib.com/images/image2/2018042615212815101.jpg C .https://assets.asklib.com/images/image2/201804261521324954.jpg D .https://assets.asklib.com/images/image2/2018042615213689081.jpg E .https://assets.asklib.com/images/image2/2018042615214239967.jpg

A . 左上3和右上2 B . 左上43和右上23 C . 左上3和右上23 D . 左上4和右上32 E . 左上43和右上234

A . 1∶1 B . 1∶2 C . 2∶3 D . 3∶2 E . 3∶4

A . 1∶4 B . 1∶3 C . 1∶1 D . 1∶2 E . 1∶6

A . ['https://assets.asklib.com/psource/2015091118015216181.gif B .https://assets.asklib.com/psource/201509111801541671.gif C .https://assets.asklib.com/psource/2015091118015563488.gif D .https://assets.asklib.com/psource/201509111801573695.gif E .https://assets.asklib.com/psource/2015091118015988390.gif

A．4:3 B．3:2 C．1:1 D．2:3 E．3:4