东大测试技术基础X21春《测试技术基础》在线平时作业3资料-东北大学-无忧答案网

作业帮 发表于 2021-3-9 10:39:54

东大测试技术基础X21春《测试技术基础》在线平时作业3资料

测试技术基础X21春学期《测试技术基础》在线平时作业3
1.[单选题] <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; mso-bidi-font-weight: bold">满足不真测试条件的测试系统，其幅频特性和相频特性为（<span style="FONT-FAMILY: "Times New Roman"; COLOR: red; 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="FONT-FAMILY: 宋体; COLOR: red; 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">）<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-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="487" height="107" alt="" src="http://file.open.com.cn/ItemDB/65628/422c8181-1a45-4e0b-83ff-5592598355f1/2014614123831243.jpg" />
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A.A
B.B
C.C
D.D
答:——C——
2.[单选题] <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">选择题<img height="143" alt="" width="577" src="http://file.open.com.cn/ItemDB/65628/015bb9f8-e351-4fdd-a9a2-7cf618341889/20101312115316.jpg" />
A.A
B.B
C.C
D.D
答:——A——
3.[单选题] <span style="FONT-FAMILY: 宋体; COLOR: black; 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-weight: bold">时域信号与<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">频域信号<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="473" height="144" alt="" src="http://file.open.com.cn/ItemDB/65628/0db343e4-0bbe-4b60-bbe5-eb9fe9e14afc/201461021482393.jpg" />
A.A
B.B
C.C
D.D
答:——C——
4.[单选题] <img height="165" alt="" width="518" src="http://file.open.com.cn/ItemDB/65628/64de9c6d-05c1-4379-8ff0-88e82c9d4990/20102122813534.jpg" />end
A.A
B.B
C.C
D.D
答:————
5.[单选题] <img height="117" alt="" width="392" src="http://file.open.com.cn/ItemDB/65628/dd183efd-32af-4888-ae49-9a0f4d784732/20102114641404.jpg" /> xua选择题
A.A
B.B
C.C
D.D
答:————
6.[单选题] 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
答:————
7.[单选题] <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">频域信号与<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">相应的时域信号<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" />
A.A
B.B
C.C
D.D
答:————
8.[单选题] 选择题1. 概率密度函数曲线下的面积等于（）A. 0.1B. 0.7C. 1.0D. 2.0
A.A
B.B
C.C
D.D 更多答案进 ap5u.com大工q7 612 960 21
答:————
9.[单选题] <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 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" />
A.A
B.B
C.C
D.D
答:————
10.[单选题] <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">选择题<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"><img height="136" alt="" width="415" src="http://file.open.com.cn/ItemDB/65628/92ce29c2-5b00-4cf5-8ddf-e9f6640c65cd/201013121193322.jpg" />
A.A
B.B
C.C
D.D
答:————
11.[判断题] 判断题电桥的四臂都是应变片，当处在相同的温度场时，温度引起电桥的输出为零。
A.错误
B.正确
答:————
12.[判断题] 受光照的半导体材料的电导率发生变化或产生光电动势的效应称为外光电效应。（）
A.错误
B.正确
答:————
13.[判断题] 若采样频率过低，不满足采样定理，则采样后的信号会发生泄漏现象。（ ）
A.错误
B.正确
答:————
14.[判断题] 判断题单向拉伸（压缩）应变测量中，在主应力和垂直于主应力方向上各贴一枚应变片，材料波桑比为0.3，可组成的电桥的最大输出是实际值的1.3倍。
A.错误
B.正确
答:————
15.[判断题] 判断题测量振动的电荷放大器在使用中受电缆电容的影响大
A.错误
B.正确
答:————
16.[判断题] 热电偶产生的热电势是由两种导体的接触电势和单一导体的温差电势所形成。（ ）
A.错误
B.正确
答:————
17.[判断题] 传感器的灵敏度越高，可以感知越小的变化量，即被测量稍有微小变化时，传感器即有较大的输出。
A.错误
B.正确
答:————
18.[判断题] 压差式流量计是通过测定流体经过节流装置时所产生的动压力差来实现流量测量的。（ ）
A.错误
B.正确
答:————
19.[判断题] 由于时域的截断而在频域出现附加频率分量的现象称为泄漏。（ ）
A.错误
B.正确
答:————
20.[判断题]绝对式式拾振器在测振时被固定在被测设备上。（ ）
A.错误
B.正确
答:————

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东大测试技术基础X21春《测试技术基础》在线平时作业3资料