你还会多少？医疗设备维护试题（上）

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                    <section label="powered by gulangu"><p><span><span><strong><p><img src="image/20200927/889178513a87dfc04340160dbd5bbdbf_1.gif" /></p></strong></span></span></p><p><span><span><strong>医疗维修工程师必知，看看你还会多少？</strong></span></span></p><p><span><strong><span>1.三个相同的电阻，串联时总电阻是并联时总电阻的 （ ）倍。&nbsp;</span></strong></span></p><p><span><span>A．9 &nbsp; &nbsp; &nbsp;</span></span><span>B．6 &nbsp; &nbsp;&nbsp;</span><span>C． 3 &nbsp; &nbsp;&nbsp;</span><span>D．4</span></p><p><span><strong><span>2.有三只 10μ F 的电容器，要得 30μ F 的电容量，可将它们 （ ）连接。&nbsp;</span></strong></span></p><p><span><span>A．串联 &nbsp;&nbsp;</span></span><span>B．并联 &nbsp; </span><span>C．混联 &nbsp; &nbsp;</span><span>D．其他连接</span></p><p><span><strong><span>3.在直流电路中，把电流流入电源的一端叫做电源的 （）。</span></strong></span></p><p><span><span>&nbsp;A．正极 &nbsp; &nbsp;</span></span><span>B．负极 &nbsp; &nbsp;</span><span>C．端电压 &nbsp; &nbsp;</span><span>D．电势</span></p><p><span><strong><span>4.一台额定电压为 100V、额定电流为 10A 的用电设备接入 220V 的电路中并能正常工作，可以 （ ） 。</span></strong></span></p><p><span>A．串联一个 12Ω 的电阻 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></p><p><span><span>B．串联一个 10Ω 的电阻 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>C．串联一个 20Ω 的电阻 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>D．并联一个 12Ω的电阻</span><br  /><strong><span>5.两台额定功率相同，但额定电压不同的用电设备，若额定电压 110V 设备电阻为 R，则额定电压为 220V 设备的电阻为 （）。</span></strong></span></p><p><span><span>A．2R &nbsp; </span></span><span>B．3R &nbsp; &nbsp;</span><span>C．4R &nbsp; &nbsp; </span><span>D．R&nbsp;</span></p><p><span><strong><span>6.为把电能输送到远方，减少线路上的功率损耗和电压损失，主要采用 （ ） 。&nbsp;</span></strong></span></p><p><span><span>A．提高功率因数减少无功 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>B． 增加有功 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>C．增加线路截面减少电阻 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>D．变压器升压</span><br  /><strong><span>7.半导体中空穴电流是由 （ ）所形成的。&nbsp;</span></strong></span></p><p><span><span>A．价电子的定向运动 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．自由电子定向运动 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>C．自由电子填补空穴 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>D．价电子填补空穴</span><br  /><strong><span>8. PN 结具有 （ ）单向导电性特性，即 （ ）导通， （ ）截止 。&nbsp;</span></strong></span></p><p><span><span>A．选择，低压，高压 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>B．单向，反向，正向 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>C．选择，高压，低压 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>D．单向，正向，反向</span><br  /><strong><span>9.三极管工作在放大状态时，发射结应 （ ）偏置，集电结应 （ ）偏置。</span></strong></span></p><p><span><span>A．正向，反向 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>B．正向，正向 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>C．反向，正向 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>D．反向，反向</span><br  /><strong><span>10. 差动放大电路的主要优点是 （ ） 。&nbsp;</span></strong></span></p><p><span><span>A．稳定的放大性能 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．能有效地抑制零点漂移</span></span></p><p><span>C．较高的输入电阻 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></p><p><span><span>D．有稳定地静态工作点</span><br  /><strong><span>11.晶闸管只有在阳极和阴极之间加 （ ）电压条件下，再在控制极和阴极之间加 （ ）信号才能导通。</span></strong><span>&nbsp;</span></span></p><p><span><span>A．正向，触发 &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．正向，控制 &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>C．反向，触发 &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>D．反向，控制</span><br  /><strong><span>12. 希望有用信号频率为 7kHz 应选用 （ ） 。</span></strong><span>&nbsp;</span></span></p><p><span><span>A．低通滤波器 &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．高通滤波器 &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>C．带通滤波器 &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>D．带阻滤波器</span><br  /><strong><span>13. 硅和锗三极管的门电压不同，分别为 （ ）伏。</span></strong></span></p><p><span><span>A．0.2，0.5 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．0.2，0.3 &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span>C．0.5，0.2 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></p><p><span><span>D．0.3，0.2</span><br  /><strong><span>14. 三极管工作在数字电路中的状态是（）&nbsp;</span></strong></span></p><p><span><span>A．截止和饱和 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>B．截止和放大 &nbsp;</span></span></p><p><span><span>C．放大和倒置 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>D．截止和倒置</span><br  /><strong><span>15. 数字电路中， “全 0 出 1，有 1 出 0”的元件是 （）</span></strong></span></p><p><span><span>A．与门 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．与非门 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>C．或非门 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span><span>&nbsp;&nbsp;</span></p><p><span>D．异或门</span><span><br  /><strong><span>16. 十进制数 54 转换成二进制数和 8421BCD 码分别为 （ ） 。&nbsp;</span></strong></span></p><p><span><span>A．100110 和 01010100 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．100110 和 1010100 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>C．110110 和 1010100 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>D．110110 和 01010100</span><br  /><strong><span>17. 微型计算机关机之后，所有的程序和文件都保存在 （ ）里。</span></strong></span></p><p><span><span>A．内存 &nbsp; B．硬盘 &nbsp; C．主板 &nbsp; &nbsp;D．存储卡</span><br  /><strong><span>18. 计算机开机黑屏，并发出报警声音，可能是 （ ）出现故障。</span></strong><span>&nbsp;</span></span></p><p><span><span>A．内存 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．显示卡 &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>C．A 和 B 都可能 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>D．A 和 B 都不可能</span><br  /><strong><span>19. 显示磁盘文件目录的 DOS 命令是 （ ） 。</span></strong><span>&nbsp;</span></span></p><p><span><span>A．TREE &nbsp; &nbsp; &nbsp;B．DIR &nbsp; &nbsp; &nbsp; C．TYPE &nbsp; &nbsp; &nbsp;D．DISPLAY</span><br  /><strong><span>20. 单片机系统一般采用 （ ）元件获得外部时钟信号。</span></strong><span>&nbsp;</span></span></p><p><span><span>A．晶振 &nbsp; &nbsp; &nbsp; B．电感 &nbsp; &nbsp; &nbsp; C．电容 &nbsp; &nbsp; &nbsp; &nbsp;D．LC 回路</span><br  /><strong><span>21. 工频直流稳压电源由变压器、 （ ） 、滤波、稳压 4 部分组成。&nbsp;</span></strong></span></p><p><span><span>A．反馈 &nbsp; &nbsp; B．削峰 &nbsp; &nbsp; C．整流 &nbsp; &nbsp; D．限流</span><br  /><strong><span>22. 开关电源的核心部分是 （ ） 。&nbsp;</span></strong></span></p><p><span><span>A．滤波 &nbsp; &nbsp;B．稳压 &nbsp; &nbsp; C．隔离 &nbsp; &nbsp; D．逆变</span><br  /><strong><span>23. 以下不能用于电气隔离的元器件是 （ ） 。&nbsp;</span></strong></span></p><p><span><span>A．电阻 &nbsp; &nbsp; B．继电器 &nbsp; &nbsp; C．光电耦合器 &nbsp; &nbsp; &nbsp;D．变压器</span><br  /><strong><span>24.以下不能用来检测运动部件的位置的元器件是 （ ） 。&nbsp;</span></strong></span></p><p><span><span>A．光电传感器 &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>B．行程开关 &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>C．精密电位器 &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>D．交流接触器</span><br  /></span><strong><span><span>25. 一只标有“T 5A/250V”的保险丝，可以使用( &nbsp; &nbsp;) &nbsp;&nbsp;</span></span><span>保险丝替代。</span></strong></p><p><span><span>A．F 5A/250V &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; B．T 5A/400V &nbsp; &nbsp; &nbsp;&nbsp;</span></span><span><span>C．T 1A/250V &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span><span>D．T 10A/250V</span></p><p><span><strong><span>26. 一只标有“1500μ F 16V”的电解电容，可以使用 （ ）电容替代。&nbsp;</span></strong></span></p><p><span><span>A．1500 μ F 32V &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．1500 μ F 5V&nbsp;</span></span></p><p><span><span>C． 1000 μ F 16V &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span>D．2000 μ F 16V 。</span></p><p><strong><span><span>27. 一只色环电阻有四个环，颜色分别是棕、黑、黑、金。它的标称阻值是 ( &nbsp; &nbsp;</span></span><span>）欧姆。</span><span>&nbsp;</span></strong><span>&nbsp;</span></p><p><span>&nbsp;A．1000 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; B．100 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; C．10 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; D．1</span></p><p><strong><span><span>28. 一只贴片电阻上面标有“103” ，它的标称阻值是 （ ）欧姆。</span></span></strong></p><p><span><span>A．100k &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B．10k &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; C．100 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; D．10</span><br  /><strong><span>29. 用数字式万用表判断二极管的好坏，应使用 （ ） 。&nbsp;</span></strong></span></p><p><span><span>A．电阻档 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B．×1k 档 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; C．直流电压档 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; D．二极管档</span><br  /><strong><span>30. 示波器可以直接测量 （ ）随时间变化的波形。&nbsp;</span></strong></span></p><p><span><span>A．电压 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; B．电流 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C．电阻 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; D．电功率</span><br  /><strong><span>31. 水银血压计的精确度与 （ ）无关。&nbsp;</span></strong></span></p><p><span><span>A．水银柱的倾斜 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．地球的重力加速度 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>C．水银的多少&nbsp;</span></span></p><p><span><span>D．水银柱的粗细</span><br  /><strong><span>32.国际标准十二导联体系中，需要在人体表放置 （ ）根导联线。&nbsp;</span></strong></span></p><p><span><span>A．12 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B．6 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; C．10 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; D．5</span><br  /><strong><span>33. 心电图机的前置放大电路与机壳绝缘，所以称为“ （ &nbsp; ）前置放大电路” 。</span></strong></span></p><p><span><span>A．绝缘 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; B．浮地 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C． 虚地 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;D．接地</span><br  /><strong><span>34. 十二导单道心电图机只有某一导联无波形，不能排除 （ ）故障。</span></strong><br  /><span>A．导联选择电路 &nbsp; &nbsp; &nbsp;B．前置放大器 &nbsp; &nbsp; &nbsp;C．主放大器 &nbsp; &nbsp; &nbsp;D．记录器</span><br  /><strong><span>35. 监护仪可以实时、连续监测病人多项生命体征参数，包括 （ ） 。</span></strong><span>&nbsp;</span></span></p><p><span><span>A．血压 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; B．氧饱和度 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C．心率 &nbsp; &nbsp; &nbsp; &nbsp; D．以上都是</span><br  /><strong><span>36. 监护仪测量呼吸频率最简单、常用的方法是 （ ） 。&nbsp;</span></strong></span></p><p><span><span>A．呼气末 CO 法 &nbsp; &nbsp; B．吸气末 O 法&nbsp;</span></span></p><p><span><span>C．阻抗法 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; D．比色法</span><br  /><strong><span>37. 监护仪开机白屏，不能排除 （ ）故障。&nbsp;</span></strong></span></p><p><span><span>A．电源保险丝 &nbsp; &nbsp; &nbsp; &nbsp;B．电源开关 &nbsp; &nbsp; &nbsp; &nbsp; C．计算机板 &nbsp; &nbsp; &nbsp; &nbsp; D．以上都是</span><br  /><strong><span>38. 测量动脉血压的必备元件不包括 （ ） 。&nbsp;</span></strong></span></p><p><span><span>A．压力传感器 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;B．流量计 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;C．气泵 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; D．电磁阀 &nbsp; &nbsp;&nbsp;</span><br  /><strong><span>39. 监护仪上用于测量血氧饱和度的“指夹”或“指套”里，不包括 （）。</span></strong></span></p><p><span><strong><span>&nbsp;</span></strong><span>A．光电耦合器 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span><span>B．红光发光二极管 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;</span></span></p><p><span><span>C．红外发光二极管 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</span></span></p><p><span>D．光电管</span></p><p><span><strong><span>40.临床常用双频谱指数 （BIS）监测病人的镇静水平，它是一种 （ ）信号监测技术。&nbsp;</span></strong></span></p><p><span><span>A．心电 &nbsp; &nbsp; &nbsp; B．肌电 &nbsp; &nbsp; C．脑电 &nbsp; &nbsp; &nbsp;D．神经电</span><br  /></span></p><p><span><br  /></span></p><p><span>来源：医学工程在线</span></p><p><br  /></p><p><br  /></p><section><p><strong><span>欢迎投稿，并有精美礼品赠送。</span></strong><span>*点击左下角</span><strong>【阅读原文】</strong><span>，即可加入“医疗器械维修工程师之家”你的世界，由此展开！*</span><span></span></p></section><p><br  /></p><p><br  /></p><p><br  /></p><p><p><img src="image/20200927/66b91dba51803cd4fd2a18b800afbccc_2.gif" /></p></p><p><span><br  /></span><br  /></p></section><p><br  /></p>