测试技术基础_东大网院2021春_01满分

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测试技术基础_2021春_01
1.[单选题]每秒周期数是的度量。（A）幅值（B）相位（C）频率（D）波长

    A.
    B.
    C.
    D.
    正确答案:————
2.[单选题]概率密度函数提供了随机信号（　　）的信息。（A）沿概率轴分布（B）沿幅值域分布（C）沿时域分布（D）沿强度分布
    A.
    B.
    C.
    D.
    正确答案:————
3.[单选题]根据结构不同，压电式加速度传感器中没有（）加速度传感器。（A）.拉伸型；（B）.压缩型；（C）.剪切型；（D）.弯曲型。
    A.
    B.
    C.
    D.
    正确答案:————
4.[单选题]<p style="TEXT-INDENT: 0cm; MARGIN: 0cm 0cm 0pt; mso-char-indent-count: 0" class="MsoNormal"><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-weight: bold">在随机误差分析中，标准差</span><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</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-weight: bold">决定了随机误差正态分布的形态，</span><span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><o:p></o:p></span></p><p style="TEXT-INDENT: 24pt; MARGIN: 0cm 0cm 0pt" class="MsoNormal"><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-weight: bold">下面对</span><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span>_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><font face="Times New Roman">1</font></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-weight: bold">、</span><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span>_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><font face="Times New Roman">2</font></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-weight: bold">和</span><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span>_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><font face="Times New Roman">3</font></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-weight: bold">间的关系表达正确的是<u><span style="COLOR: red">（</span></u></span><u><span style="COLOR: red; FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><font face="Times New Roman"></font></span></u><u><span style="FONT-FAMILY: 宋体; COLOR: red; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold">）</span></u><span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><o:p></o:p></span></p><p style="TEXT-INDENT: 24pt; MARGIN: 0cm 0cm 0pt" class="MsoNormal"><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-weight: bold">（</span><span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><font face="Times New Roman">A</font></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-weight: bold">）</span><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">1</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><</span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">2</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><</span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">3</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><span style="mso-spacerun: yes"></span>(B)</span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">1</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">></span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">2</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">></span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">3</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><o:p></o:p></span></font></p><p style="TEXT-INDENT: 24pt; MARGIN: 0cm 0cm 0pt" class="MsoNormal"><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-weight: bold">（</span><span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><font face="Times New Roman">C</font></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-weight: bold">）</span><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">2</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">></span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">1</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">></span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">3<span style="mso-spacerun: yes"></span></span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">(D)</span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">3</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">></span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span><font face="Times New Roman">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">1</span>}<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US">></span></font><span style="FONT-FAMILY: Symbol; FONT-SIZE: 12pt; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'; mso-bidi-font-weight: bold; mso-char-type: symbol; mso-symbol-font-family: Symbol" lang="EN-US"><span style="mso-char-type: symbol; mso-symbol-font-family: Symbol">s</span></span>_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><font face="Times New Roman">2</font></span>}</p><p style="TEXT-INDENT: 24pt; MARGIN: 0cm 0cm 0pt" class="MsoNormal">_{<span style="FONT-SIZE: 12pt; mso-bidi-font-weight: bold" lang="EN-US"><font face="Times New Roman"><img alt="" width="310" height="186" src="http://exam.neu.edu.cn/resourcefile/bdeditor/dbdx/qianyi/65628/42fad58e-4f3b-44f2-b788-8877a267fe5a/2014612174516862.jpg" /><o:p></o:p></font></span>}</p>
    A.
    B.
    C.
    D.
    正确答案:————
5.[单选题]以下的测力传感器中，（）是发电型测力传感器。（A）、电感式；（B）、压磁式；（C）、电容式；（D）应变式．
    A.
    B.
    C.
    D.
    正确答案:————
6.[单选题]下列第（）组传感器都是把被测量变换为电动势输出的。（A）热电偶、电涡流、电阻应变；（B）热电偶、霍尔、半导体气敏传感器；（C）硅光电池、霍尔、磁电式；（D）压电、霍尔、电感式。
    A.
    B.
    C.
    D.
    正确答案:————
7.[单选题]传感器的动态标定不能给出传感器的（）。（A）.相位误差；（B）.频响范围；（C）.非线性误差；（D）.幅值误差。
    A.
    B.
    C.
    D.
    正确答案:————
8.[单选题]<p><img height="117" alt="" width="392" src="http://exam.neu.edu.cn/resourcefile/bdeditor/dbdx/qianyi/65628/dd183efd-32af-4888-ae49-9a0f4d784732/20102114641404.jpg" /></p><p></p><p>xua选择题</p>
    A.
    B.
    C.
    D.
    正确答案:————
9.[单选题]根据结构不同，压电式加速度传感器中没有（）加速度传感器。（A）.拉伸型；（B）.压缩型；（C）.剪切型；（D）.弯曲型。
    A.
    B.
    C.
    D.
    正确答案:————
10.[单选题]选择一个正确的答案：（）将两个中心频率相同的滤波器串联，可以达到：（A)扩大分析频带；（B)滤波器选择性变好，但相移增加；（C)幅频、相频特性都得到改善；（D）幅频、相频特性都得不到改善
    A.
    B.
    C.
    D.
    正确答案:————
11.[判断题]电压放大器的优点是其灵敏度与电缆长度无关，而且有较低的下限频率。（ ）
    A.正确
    B.错误
    正确答案:————
12.[判断题]判断题对于压电式加速度计，加速度计尺寸越大，其固有频率越高。
    A.正确
    B.错误
    正确答案:————
13.[判断题]电涡流式位移传感器是一种非接触式测振传感器，但被测件的表面粗糙度对测量影响很大。（ ）
    A.正确
    B.错误
    正确答案:————
14.[判断题]周期信号的频谱不具有离散性、谐波性和收敛性。
    A.正确
    B.错误
    正确答案:————
15.[判断题]磁电式速度传感器为惯性式速度传感器，电动势的输出与线圈的运动速度成正比。（ ）   
    A.正确
    B.错误
    正确答案:————
16.[判断题]信号的概率密度函数在均值处有盆形特征，说明信号中含有周期成分。
    A.正确
    B.错误
    正确答案:————
17.[判断题]一般情况下，光栅传感器的光栅的刻线宽度W比莫尔条纹的宽度B大得多。
    A.正确
    B.错误
    正确答案:————
18.[判断题]金属丝式传感器比半导体应变式传感器温度误差大。
    A.正确
    B.错误
    正确答案:————
19.[判断题]回转轴任意径向截面上的径向运动误差可采用置于x、y方向的两只位移传感器来分别检测径向运动误差在x、y方向的分量，在任何时刻两分量的矢量和就是该时刻径向运动误差矢量。（ ）
    A.正确
    B.错误
    正确答案:————
20.[判断题]周期信号与随机信号的互相关函数为1。
    A.正确
    B.错误
    正确答案:————