25，26缺失，缺牙区及两侧基牙情况良好，咬合正常，设计固定桥的基牙最好是（）

A . 材料的强度 B . 粘固剂的粘着力 C . 基牙的制备情况 D . 基牙的稳固情况 E . 咬合平衡

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

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

A . ['https://assets.asklib.com/psource/2015091118025665021.gif B .https://assets.asklib.com/psource/2015091118025871989.gif C .https://assets.asklib.com/psource/20150911180259285.gif D .https://assets.asklib.com/psource/2015091118030072335.gif E .https://assets.asklib.com/psource/2015091118030273532.gif

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

A . ['https://assets.asklib.com/psource/2015091115403185872.gif B .https://assets.asklib.com/psource/201509111540358948.gif C .https://assets.asklib.com/psource/2015091115403711948.gif D .https://assets.asklib.com/psource/2015091115403870763.gif E .https://assets.asklib.com/psource/2015091115404355000.gif

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 . 增加义齿强度B . 减小义齿体积C . 防止义齿下沉D . 连接义齿各部分成一整体E . 传递、分散https://assets.asklib.com/images/image2/2017042311170674530.jpg 力

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 . 置于下颌舌隆突部位B . 置于舌https://assets.asklib.com/images/image2/2017042311174033862.gif 侧龈缘与舌系带之间，距牙龈缘3～4mmC . 在https://assets.asklib.com/images/image2/2017042311174033862.gif 舌面的隆突上D . 位https://assets.asklib.com/images/image2/2017042311174033862.gif 于舌侧牙颈部E . 置于https://assets.asklib.com/images/image2/2017042311174033862.gif 舌侧龈缘，龈乳突区

A . 圆球式 B . 圆锥式 C . 鞍式 D . 改良鞍式 E . 悬空式

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

A . ['https://assets.asklib.com/psource/2015092408474641423.jpg B .https://assets.asklib.com/psource/2015092408475248445.jpg C .https://assets.asklib.com/psource/2015092408480668083.jpg D .https://assets.asklib.com/psource/2015092408481171775.jpg E .https://assets.asklib.com/psource/2015092408481672861.jpg

A . ['https://assets.asklib.com/psource/2015091117150324727.gif B .https://assets.asklib.com/psource/2015091117150429644.gif C .https://assets.asklib.com/psource/2015091117150620970.gif D .https://assets.asklib.com/psource/2015091117150722435.gif E .https://assets.asklib.com/psource/2015091117150971185.gif

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 . 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 . 有一定的宽度、厚度，边缘应圆钝 B . 不能进入组织倒凹区 C . 具有一定强度，不变形、不断裂 D . 不影响周围组织功能性活动 E . 能改善缺损牙槽嵴的外形

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

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．['<img src='https://img2.soutiyun.com/shangxueba/ask/18081001-18084000/18083275/2015092408474641423.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/18081001-18084000/18083275/2015092408475248445.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/18081001-18084000/18083275/2015092408480668083.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/18081001-18084000/18083275/2015092408481171775.jpg' /> E．<img src='https://img2.soutiyun.com/shangxueba/ask/18081001-18084000/18083275/2015092408481672861.jpg' />