成考院校在线答案
- 2022-09-12 [单选] <p class="MsoNormal" align="left" style="margin-right:-2.85pt;text-align:left; line-height:18.0pt">40、<span style="mso-bidi-font-size:10.5pt;font-family:黑体; mso-bidi-font-family:"Times New Roman"">测量油库<span class="GramE">储油罐内油位</span>高度，适于采用</span><span style="font-family:黑体;mso-bidi-font-family:"Times New Roman"">（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" align="left" style="margin-right:-2.85pt;text-align:left">34、<span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-family: "Times New Roman"">1. </span><span style="mso-bidi-font-size:10.5pt; font-family:黑体;mso-bidi-font-family:"Times New Roman"">信息技术的支柱不包括（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）。<span lang="EN-US"> <o:p></o:p></span></span></p> <p class="MsoNormal" align="left" style="margin-right:-2.85pt;text-align:left"><span lang="EN-US" style="font-size:11.0pt;mso-bidi-font-size:12.0pt;font-family: 黑体"> <o:p> </o:p></span></p>
- 2022-09-12 [多选] <p class="MsoNormal" style="mso-pagination:widow-orphan">4、<span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman"">数字温度传感器<span lang="EN-US">DS18B20</span>可以测量（ <span style="mso-spacerun:yes"> </span>），输出（ ）位数字量。</span><span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-font-kerning:0pt">。<span lang="EN-US"> <o:p></o:p></span></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">12、<span style="mso-bidi-font-size:10.5pt;font-family:黑体; mso-bidi-font-family:"Times New Roman"">霍尔元件材料一般选择金属，因为金属材料载流子迁移率很高。（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="font-family:黑体"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">19、<span style="mso-bidi-font-size:10.5pt;font-family:黑体; mso-bidi-font-family:Arial">环境温度和湿度变化、机械振动和冲击、电子辐射和传导均属于系统的外部干扰。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">16、<span style="mso-bidi-font-size:10.5pt;font-family:黑体; mso-bidi-font-family:Arial;mso-font-kerning:0pt">与霍尔开关，涡流开关相比，光电开关的最大特点是能够判断所有物体的有无。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal">19、<span style="mso-bidi-font-size:10.5pt;font-family:黑体; mso-bidi-font-family:Arial;mso-font-kerning:0pt">仪用放大器主要用于要求共模抑制比高的模拟信号场合。例如有强电或强电磁干扰环境中，为了防止电网电压等对测量回路的破坏，待测的微弱信号输入通道常采用仪用放大器。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体"> <o:p></o:p></span></p>
- 2022-09-12 [判断] <p class="MsoNormal" style="line-height:18.0pt">20、<span style="mso-bidi-font-size: 10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman"">在进行测量数据的基本处理时，应按照先处理系统误差、再处理粗大误差、最后处理随机误差并获得最终的测量结果的顺序进行。（<span lang="EN-US"><span style="mso-spacerun:yes"> </span></span>）</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体"> <o:p></o:p></span></p> <p class="MsoNormal"><span lang="EN-US" style="font-family:黑体"> <o:p> </o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" align="left" style="text-align:left;line-height:13.15pt; mso-pagination:widow-orphan;background:#F8F8F8">29、<span style="mso-bidi-font-size: 10.5pt;font-family:黑体;mso-bidi-font-family:Arial;color:black;mso-color-alt: windowtext;mso-font-kerning:0pt">一带通滤波器，其中心频率是</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:"Calibri",sans-serif;mso-fareast-font-family: 黑体;color:black;mso-color-alt:windowtext;mso-font-kerning:0pt">ƒ</span><sub><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-family: Arial;color:black;mso-color-alt:windowtext;mso-font-kerning:0pt">0</span></sub><span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-family:Arial; color:black;mso-color-alt:windowtext;mso-font-kerning:0pt">，带宽是<span lang="EN-US">B</span>，则滤波器的品质因数</span><span lang="EN-US" style="mso-bidi-font-size: 10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman";color:black; mso-color-alt:windowtext;mso-font-kerning:0pt">Q</span><span style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-family:Arial; color:black;mso-color-alt:windowtext;mso-font-kerning:0pt">等于</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-family: "Times New Roman";color:black;mso-color-alt:windowtext;mso-font-kerning:0pt">( </span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:"Calibri",sans-serif; mso-fareast-font-family:黑体;color:black;mso-color-alt:windowtext;mso-font-kerning: 0pt"> </span><span lang="EN-US" style="mso-bidi-font-size:10.5pt; font-family:黑体;mso-bidi-font-family:"Times New Roman";color:black;mso-color-alt: windowtext;mso-font-kerning:0pt">)</span><span style="mso-bidi-font-size: 10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman";color:black; mso-color-alt:windowtext;mso-font-kerning:0pt">。</span><span lang="EN-US" style="mso-bidi-font-size:10.5pt;font-family:黑体;mso-bidi-font-family:Arial; mso-font-kerning:0pt"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p style="margin:0cm;text-align:justify;text-justify:inter-ideograph; background:white">31、<span style="font-size:10.5pt;font-family:黑体;mso-bidi-font-family: "Times New Roman";color:black;mso-color-alt:windowtext">设有<span class="GramE">一</span>电路，<span lang="EN-US">R<sub>1</sub></span>、<span lang="EN-US">R<sub>3</sub></span>是工作桥臂，<span lang="EN-US">R<sub>2</sub></span>、<span lang="EN-US">R<sub>4</sub></span>是固定电阻，且<span lang="EN-US">R<sub>1</sub>=R<sub>2</sub>=R<sub>3</sub>=R<sub>4</sub></span>。工作时<span lang="EN-US">R<sub>1</sub>→R<sub>1</sub>+</span></span><span style="font-size: 10.5pt;font-family:"微软雅黑",sans-serif;mso-bidi-font-family:微软雅黑;color:black; mso-color-alt:windowtext">∆</span><span lang="EN-US" style="font-size:10.5pt; font-family:黑体;mso-bidi-font-family:"Times New Roman";color:black;mso-color-alt: windowtext">R<sub>1</sub></span><span style="font-size:10.5pt;font-family: 黑体;mso-bidi-font-family:"Times New Roman";color:black;mso-color-alt:windowtext">，<span lang="EN-US">R<sub>3</sub>→R<sub>3</sub>-</span></span><span style="font-size: 10.5pt;font-family:"微软雅黑",sans-serif;mso-bidi-font-family:微软雅黑;color:black; mso-color-alt:windowtext">∆</span><span lang="EN-US" style="font-size:10.5pt; font-family:黑体;mso-bidi-font-family:"Times New Roman";color:black;mso-color-alt: windowtext">R<sub>3</sub></span><span lang="EN-US" style="font-size:10.5pt; font-family:"Calibri",sans-serif;mso-fareast-font-family:黑体;color:black; mso-color-alt:windowtext"> <span class="apple-converted-space"> </span></span><span style="font-size:10.5pt;font-family:"微软雅黑",sans-serif;mso-bidi-font-family: 微软雅黑;color:black;mso-color-alt:windowtext">∆</span><span lang="EN-US" style="font-size:10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman"; color:black;mso-color-alt:windowtext">R<sub>3</sub>=</span><span style="font-size:10.5pt;font-family:"微软雅黑",sans-serif;mso-bidi-font-family: 微软雅黑;color:black;mso-color-alt:windowtext">∆</span><span lang="EN-US" style="font-size:10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman"; color:black;mso-color-alt:windowtext">R<sub>1</sub> </span><span style="font-size:10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman"; color:black;mso-color-alt:windowtext">若<em><b><span lang="EN-US" style="font-family:黑体">e</span></b></em><sub><span lang="EN-US">0</span></sub>为电桥的电源电压，则电桥输出电压为（ <span style="mso-spacerun:yes"> </span>）。</span><span lang="EN-US" style="font-size:10.5pt;font-family:黑体;mso-bidi-font-family:"Times New Roman""> <o:p></o:p></span></p> <p style="margin:0cm;text-align:justify;text-justify:inter-ideograph; background:white"><span lang="EN-US" style="font-size:10.5pt;font-family:黑体; mso-bidi-font-family:"Times New Roman";mso-font-kerning:1.0pt"> <o:p> </o:p></span></p>