反[图]按机制分类有（）A. ['前牙反[图]B. 后牙反[图]C....

A . A.颅底蝶筛软骨结合提前钙化 B . 下颌骨髁突软骨提前钙化 C . 额颌缝处成骨不足 D . 颧颌缝处成骨不足 E . 颧颞缝处成骨不足 F . 翼腭缝处成骨不足

A . A.颅底蝶筛软骨结合提前钙化 B . 下颌骨髁突软骨提前钙化 C . 额颌缝处成骨不足 D . 颧颌缝处成骨不足 E . 颧颞缝处成骨不足 F . 翼腭缝处成骨不足

患者，女性，11岁，替牙<img src='https://img2.soutiyun.com/shangxueba/ask/17451001-17454000/17451566/2015092910280978906.jpg' />。磨牙近中关系，前牙反<img src='https://img2.soutiyun.com/shangxueba/ask/17451001-17454000/17451566/2015092910280978906.jpg' />伴有深覆<img src='https://img2.soutiyun.com/shangxueba/ask/17451001-17454000/17451566/2015092910280978906.jpg' />、反覆盖，上牙列Ⅰ度拥挤。 A.

患儿，男性，5岁，前牙反<img src='https://img2.soutiyun.com/shangxueba/ask/17448001-17451000/17450578/2015092910154057994.jpg' />，后牙近中错<img src='https://img2.soutiyun.com/shangxueba/ask/17448001-17451000/17450578/2015092910154057994.jpg' />，反覆<img src='https://img2.soutiyun.com/shangxueba/ask/17448001-17451000/17450578/2015092910154057994.jpg' />深，反覆盖小，牙齿无松动，牙列整齐，无拥挤。 应为此患儿选择的矫治器是（） A.A.单侧垫活动矫治器 B. 舌习惯矫治器 C. 平面导板矫治器 D. 带翼扩弓活动矫治器 E. 下颌塑料联冠式斜面导板矫治器

标有扇区最低安全高度MSA的航图有()。 A.航路图、标准仪表进/离场图 B.机场图、仪表进近图 C.仪表进近图、标准仪表进/离场图

如下图所示网络图中，存在的绘图错误是()。 <img src='https://img2.soutiyun.com/ask/2019-06-10/929030258198226.png' /> A.节点编号错误 B.存在多余节点 C.有多个终点节点 D.工作编号重复

<img src='https://img2.soutiyun.com/shangxueba/ask/18576001-18579000/18577780/2015092210091326999.jpg' />缺失属于Kennedy分类第（） A．二类 B． 三类一亚类 C． 三类二亚类 D． 三类三亚类 E． 四类

当（）<img src='https://img2.soutiyun.com/shangxueba/ask/18429001-18432000/18430189/2014110509252291317.png' />且时，按壁式框架计算。 A．<img src='https://img2.soutiyun.com/shangxueba/ask/18429001-18432000/18430189/201411050925537596.png' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/18429001-18432000/18430189/2014110509260299156.png' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/18429001-18432000/18430189/2014110509261356567.png' /> D． 与<img src='https://img2.soutiyun.com/shangxueba/ask/18429001-18432000/18430189/2014110509262251934.png' />没有关系

函数<img src='https://img2.soutiyun.com/shangxueba/ask/17673001-17676000/17673048/2015102916111022819.jpg' />在x处的导数<img src='https://img2.soutiyun.com/shangxueba/ask/17673001-17676000/17673048/2015102916113931662.jpg' />是（）。 A．<img src='https://img2.soutiyun.com/shangxueba/ask/17673001-17676000/17673048/2015102916115333107.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/17673001-17676000/17673048/2015102916120553715.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/17673001-17676000/17673048/2015102916122785283.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/17673001-17676000/17673048/2015102916123924002.jpg' />

患儿，男性，5岁，要求矫治前牙反<img src='https://img2.soutiyun.com/shangxueba/ask/17694001-17697000/17696450/2015092913293624877.jpg' />。直面型，乳前牙反<img src='https://img2.soutiyun.com/shangxueba/ask/17694001-17697000/17696450/2015092913293624877.jpg' />。乳牙列完整。 A.患儿凹面型不明显，息止颌位时乳前牙呈切对切趋势，上、下乳前牙无代偿性唇倾或舌倾，下颌可退到切对切位置。针对该患儿反的矫治方法可包括（）A.调<img src='https://img2.soutiyun.com/shangxueba/ask/17694001-17697000/17696450/2015092913321029705.jpg' />，消除可能存在的<img src='https://img2.soutiyun.com/shangxueba/ask/17694001-17697000/17696450/2015092913321029705.jpg' />干扰 B. 破除吮咬上唇等不良习惯 C. 治疗下颌第二乳磨牙龋坏 D. 采用上颌<img src='https://img2.soutiyun.com/shangxueba/ask/17694001-17697000/17696450/2015092913321029705.jpg' />垫活动矫治器矫治 E. 采用下颌<img src='https://img2.soutiyun.com/shangxueba/ask/17694001-17697000/17696450/2015092913321029705.jpg' />垫式联冠斜面导板矫治 F . 采用改良颏兜前牵引矫治 G . 采用颏兜矫治 H . 采用面罩前牵引矫治

A．A B．B C．C D．D E．E

矫治开<img src='https://img2.soutiyun.com/shangxueba/ask/17454001-17457000/17455693/2015092909090652800.jpg' />的机制不包括（） A．前牙内收的"钟摆效应" B． 靠前拔牙 C． 压低后牙 D． 前移后牙 E． 以上都不是

<img src='https://img2.soutiyun.com/shangxueba/ask/17478001-17481000/17480659/2015091811031433608.jpg' />缺失，正畸后间隙窄，<img src='https://img2.soutiyun.com/shangxueba/ask/17478001-17481000/17480659/2015091811032456465.jpg' />稳固（） A．复合固定桥 B． 单端固定桥 C． 双端固定桥 D． 半固定桥 E． 种植固定桥根据牙列缺损情况选择相应的固定桥类型

函数<img src='https://img2.soutiyun.com/shangxueba/ask/17670001-17673000/17671257/2015102914165070741.jpg' />在x=2处的泰勒级数展开式为（）． A．<img src='https://img2.soutiyun.com/shangxueba/ask/17670001-17673000/17671257/2015102914171256962.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/17670001-17673000/17671257/2015102914172646978.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/17670001-17673000/17671257/2015102914174241489.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/17670001-17673000/17671257/2015102914180033916.jpg' />

Ⅰ度开<img src='https://img2.soutiyun.com/shangxueba/ask/18081001-18084000/18083328/2015092416532232721.jpg' />指上下前牙切端垂直向间隙（） A．1mm以内 B． 2mm以内 C． 3mm以内 D． 4mm以内 E． 5mm以内

Ⅲ度深覆<img src='https://img2.soutiyun.com/shangxueba/ask/19068001-19071000/19070389/2015091814512866516.jpg' />是指上前牙牙冠覆盖下前牙牙冠的（） A．不足1／3 B． 1／3～1／2 C． 1／2～2／3 D． 2／3以上 E． 全部牙冠

<img src='https://img2.soutiyun.com/shangxueba/ask/19146001-19149000/19148262/2014103117273173275.jpg' />-MIBG显像的作用机制是 A．代谢性陷入 B． 配体与受体结合 C． 化学吸附 D． 细胞的吞噬和胞饮作用 E． 特殊价态物质

患者女，23岁。凹面型，面下1／3正常，前牙反<img src='https://img2.soutiyun.com/shangxueba/ask/17481001-17484000/17483400/2015120110091219983.jpg' />，磨牙中性关系，上颌尖牙唇向高位，拥挤9mm。上下前牙唇倾度正常，下牙列无拥挤。侧位片测量显示上颌骨发育不足，ANB-2°。4个第三磨牙牙胚存在 A.该患者的诊断为（）.A.牙性安氏Ⅰ类错<img src='https://img2.soutiyun.com/shangxueba/ask/17481001-17484000/17483400/2015120110111813280.jpg' />，牙列拥挤 B. 牙性安氏Ⅲ类错<img src='https://img2.soutiyun.com/shangxueba/ask/17481001-17484000/17483400/2015120110111813280.jpg' /> C. 功能性安氏Ⅲ类错<img src='https://img2.soutiyun.com/shangxueba/ask/17481001-17484000/17483400/2015120110111813280.jpg' /> D. 骨性安氏Ⅲ类错<img src='https://img2.soutiyun.com/shangxueba/ask/17481001-17484000/17483400/2015120110111813280.jpg' /> E. 以上都不是

<img src='https://img2.soutiyun.com/shangxueba/ask/17739001-17742000/17740476/2015092916162788105.jpg' />，其中，<img src='https://img2.soutiyun.com/shangxueba/ask/17739001-17742000/17740476/2015092916163091633.jpg' />是指（）。 A．收入 B． 预期的物价变动率 C． 机会成本 D． 综合变数

A．引导下颌向后 B．舌倾下前牙 C．唇倾上前牙 D．以上都是

患者，女，13岁，前牙反<img src='https://img2.soutiyun.com/shangxueba/ask/19077001-19080000/19078389/2015091816444969409.jpg' />，侧面观·面中部凹陷，右侧上下第一磨牙呈Ⅰ类<img src='https://img2.soutiyun.com/shangxueba/ask/19077001-19080000/19078389/2015091816444969409.jpg' />关系，左侧上下第一磨牙呈Ⅲ类<img src='https://img2.soutiyun.com/shangxueba/ask/19077001-19080000/19078389/2015091816444969409.jpg' />关系<img src='https://img2.soutiyun.com/shangxueba/ask/19077001-19080000/19078389/2015091816453488134.jpg' />与<img src='https://img2.soutiyun.com/shangxueba/ask/19077001-19080000/19078389/2015091816455633841.jpg' />之间反<img src='https://img2.soutiyun.com/shangxueba/ask/19077001-19080000/19078389/2015091816444969409.jpg' />，上前牙拥挤，四个第三磨牙牙胚不存在，SNA77．0°，SNB80．0°，ANB-3．0°。 A. ['对此患者应诊断为（）A.安氏Ⅲ类错<img src='https://img2.soutiyun.com/shangxueba/ask/19077001-19080000/19078389/2015091816444969409.jpg' /> B. 安氏Ⅰ类错<img src='https://img2.soutiyun.com/shangxueba/ask/19077001-19080000/19078389/2015091816444969409.jpg' /> C. 单纯性牙列中度拥挤 D. 安氏Ⅱ类Ⅰ分类 E. 安氏Ⅱ类Ⅱ分类

上颌<img src='https://img2.soutiyun.com/shangxueba/ask/19041001-19044000/19042444/2015101513492761967.jpg' />垫附双曲舌簧矫治前牙反<img src='https://img2.soutiyun.com/shangxueba/ask/19041001-19044000/19042444/2015101513492761967.jpg' />，舌簧加力的时间间隔是（） A．每天加力 B． 2～3天 C． 每周 D． 2周 E． 每月

<img src='https://img2.soutiyun.com/shangxueba/ask/18402001-18405000/18403054/2016072513532533647.gif' />此符号表示（）。 A．索引符号 B． 详图符号 C． 该图来源于第三张图纸 D． 该图来源于第五张图纸 E． 详图节点编号为5