20春学期《测试技术基础》在线平时作业1

adminhan

<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">带通滤波器</span><img height="243" width="534" alt="" src="http://file.open.com.cn/ItemDB/65628/e96b64ec-e42f-44aa-9f9a-66b0b4112724/201021165834271.jpg" />
A:A
B:B
C:C
D:D

<p>傅立叶变换性质</p><p><img width="586" height="79" alt="" src="http://file.open.com.cn/ItemDB/65628/d70ab656-5ed5-4722-b17e-877fb9826613/201461021323562.jpg" /></p>
A:A
B:B
C:C
D:D

<p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">设一带通滤波器的下截止频率为</span></p><p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img alt="" width="546" height="231" src="http://file.open.com.cn/ItemDB/65628/152ec265-80be-499a-9115-669b5ac201de/2014615102345738.jpg" /></span></p>
A:A
B:B
C:C
D:D

<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-bidi-language: AR-SA">记录磁带慢录快放，放演信号的频谱带宽<strong style="mso-bidi-font-weight: normal"><u><span style="COLOR: red">（</span></u></strong></span><strong style="mso-bidi-font-weight: normal"><u><span lang="EN-US" style="FONT-SIZE: 12pt; FONT-FAMILY: &quot;Times New Roman&quot;; COLOR: red; mso-fareast-language: ZH-CN; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><span style="mso-spacerun: yes">&nbsp;&nbsp;</span> <span style="mso-spacerun: yes">&nbsp;&nbsp; </span></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; COLOR: red; mso-fareast-language: ZH-CN; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-bidi-language: AR-SA">）</span></u></strong>
A:变窄，幅值压低
B:扩展，幅值压低
C:变窄，幅值增高
D:扩展，幅值增高

<p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">频域<span style="COLOR: black; mso-bidi-font-weight: bold">信号与</span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">相应的<span style="COLOR: black; mso-bidi-font-weight: bold">时域</span>信号</span></p><p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img width="599" height="103" alt="" src="http://file.open.com.cn/ItemDB/65628/0549f5f9-723c-4e46-b0dd-01231894a0c9/2014610215237898.jpg" /></span></p>
A:A
B:B
C:C
D:D

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">传感器的动态特性越好，说明传感器的响应在被测频率范围内（</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体"><strong style="mso-bidi-font-weight: normal"><span style="COLOR: red" lang="EN-US"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span></span></strong></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">）。</span>
A:<p style="MARGIN: 0cm 0cm 0pt" class="MsoNormal"><font size="3"><span style="FONT-FAMILY: 宋体; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-latin; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">精度越高</span></font></p>
B:<span style="FONT-FAMILY: 宋体; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-latin; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">精度越差</span>
C:<span style="FONT-FAMILY: 宋体; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-latin; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">对被测信号的反应能力越快</span>
D:<span style="FONT-FAMILY: 宋体; mso-ascii-theme-font: minor-latin; mso-fareast-font-family: 宋体; mso-fareast-theme-font: minor-fareast; mso-hansi-theme-font: minor-latin; mso-ascii-font-family: Calibri; mso-hansi-font-family: Calibri">对被测信号的反应能力越慢</span>

end<img alt="" src="http://file.open.com.cn/ItemDB/65628/1fdf0e8c-7c30-4656-af17-d3b730dee621/20102113423854.jpg" />
A:A
B:B
C:C
D:D

<p>end</p><p><img height="280" alt="" width="508" src="http://file.open.com.cn/ItemDB/65628/8e5c0a21-be63-4dd6-8156-69031564e0be/201021112127372.jpg" /></p>
A:A
B:B
C:C
D:D

<strong>选择题</strong><br><br>1.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 概率密度函数曲线下的面积等于（）<br>A. 0.1<br>B. 0.7<br>C. 1.0<br>D. 2.0<br><strong></strong><br><br>
A:A
B:B
C:C
D:D

<p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">矩形窗函数<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">傅里叶变换:</span></span></p><p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><img width="614" height="136" alt="" src="http://file.open.com.cn/ItemDB/65628/49fc85b3-c5cc-4100-91d8-81ff09320944/2014610213636617.jpg" /></span></span></p>
A:A
B:B
C:C
D:D

<span style="FONT-SIZE: 14pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><strong><u>判断题</u></strong></span><span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">，<span style="COLOR: black; mso-bidi-font-weight: bold">转子流量计不是流体阻力式流量计。</span></span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">当输入不变时在规定时间内输出的变化，称为零漂。</span><strong><u><span style="FONT-FAMILY: 宋体; COLOR: red; FONT-SIZE: 14pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">（&nbsp;&nbsp;&nbsp;&nbsp; ）</span></u></strong>
A:错误
B:正确

<p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">电磁式激振器当加上直流电流后，直流磁感应强度</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US"><span style="POSITION: relative; TOP: 5pt; mso-text-raise: -5.0pt"><v:shapetype id="_x0000_t75" stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">B₀</span> <v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype></span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">不再为零，将工作</span></p><p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">点移到</span><em style="mso-bidi-font-style: normal"><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">B</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">～</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">F</span></em><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US"> </span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">近似直线的中段，这时产生的电磁交变吸力</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US"><span style="POSITION: relative; TOP: 5pt; mso-text-raise: -5.0pt"></span></span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 12pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-fareast-font-family: 宋体" lang="EN-US">F₁</span>的波形与交变磁感应波形基本相同。</span><strong><u><span style="FONT-FAMILY: 宋体; COLOR: red; FONT-SIZE: 14pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">（&nbsp;&nbsp;&nbsp;&nbsp; ）</span></u></strong></p>
A:错误
B:正确

<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">定度曲线偏离其拟合直线的程度即为非线性度。</span>
A:错误
B:正确

<span style="FONT-SIZE: 12pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">周期信号的频谱不具有离散性、谐波性和收敛性。</span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">中间导体定律指出，在热电偶回路中，只要接入的第三导体两端温度不同，则对回路的总的热电势没有影响。</span><strong><u><span style="FONT-FAMILY: 宋体; COLOR: red; FONT-SIZE: 12pt; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-bidi-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">（&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ）</span></u></strong><span style="FONT-FAMILY: &quot;Times New Roman&quot;; COLOR: black; FONT-SIZE: 12pt; mso-bidi-font-weight: bold; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> </span>
A:错误
B:正确

<span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-bidi-font-weight: bold">当</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 10.5pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-bidi-font-weight: bold" lang="EN-US">&tau;</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-bidi-font-weight: bold">＝</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 10.5pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-bidi-font-weight: bold" lang="EN-US">0</span><span style="FONT-FAMILY: 宋体; FONT-SIZE: 10.5pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-bidi-font-weight: bold">时，自相关函数值</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;; FONT-SIZE: 10.5pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体; mso-bidi-font-weight: bold" lang="EN-US">Rx(0)</span><strong><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 10.5pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt">为最小值</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;; COLOR: red; FONT-SIZE: 10.5pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"> </span><span style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 10.5pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt">。</span><span style="FONT-FAMILY: &quot;Times New Roman&quot;; COLOR: red; FONT-SIZE: 10.5pt; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体"> </span><u><span style="FONT-FAMILY: 宋体; COLOR: red; FONT-SIZE: 14pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">（&nbsp;&nbsp;&nbsp;&nbsp; ）</span></u></strong>
A:错误
B:正确

<strong><u><span style="FONT-SIZE: 14pt; COLOR: red; FONT-FAMILY: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">判断题</span><span style="FONT-SIZE: 14pt; COLOR: red; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"> </span></u></strong><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: 宋体; mso-bidi-font-weight: bold; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">常用的有摄氏温标、华氏温标和热力学温标等。</span><strong><span style="FONT-SIZE: 12pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">&nbsp;</span></strong><span style="FONT-SIZE: 14pt; COLOR: black; FONT-FAMILY: &quot;Times New Roman&quot;; mso-bidi-font-weight: bold; mso-fareast-font-family: 宋体; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><span style="mso-spacerun: yes">&nbsp;</span></span>
A:错误
B:正确

<span style="LINE-HEIGHT: 150%; FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 10.0pt">反馈、控制环节的功能主要用于开环控制系统中的测试系统。</span>
A:错误
B:正确

<p><span style="FONT-FAMILY: 宋体; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-family: 'Times New Roman'; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">傅里叶变换的性质:</span></p><p><img width="487" height="42" alt="" src="http://file.open.com.cn/ItemDB/65628/d23a64f0-b857-44ad-b83f-f8495a684204/2014610174548230.jpg" /></p>
A:错误
B:正确