第一篇:大工12秋《专业英语(计算机英语)》在线测试1、2、3
大工12秋《专业英语(计算机英语)》在线测试
1一、判断题:
1.B2.B3.B4.B5.A6.B7.A8.B9.A10.A
二、单选题:
1.D2.A3.A4.B5.B6.B7.B8.A9.A10.B
11.A 12.C13.A14.B15.A16.B17.A18.A
19.A20.D
大工12秋《专业英语(计算机英语)》在线测试
2一、判断题:
1.B2.B3.A4.B5.B6.B7.B8.A9.B10.B
二、单选题:
1.D2.A3.A4.C5.D6.B7.B8.B9.A10.A
11.A 12.A13.C14.A15.B16.A17.B18.C
19.D20.A
大工12秋《专业英语(计算机英语)》在线测试
3一、判断题:
1.B2.B3.B4.B5.B6.B7.A8.B9.A10.B
二、单选题:
1.A2.B3.D4.A5.D6.B7.B8.A9.C10.A
11.C 12.B13.A14.B15.B16.A17.B18.C
19.A20.A
第二篇:大工12春《大学英语3》在线测试1
大工12春《大学英语3》在线测试1
一,单选题
1.It is not an ________ method to learn a language by focusing on a large vocabulary only.A.effect
B.affectionate
C.efficient
D.affected
正确答案:C
2.Although he failed in his attempts, his mother's __________ drove him on to continue his efforts.A.motivation
B.encouragement
C.intention
D.compulsion
正确答案:B
3.Since this road is wet and slippery this morning, it _________ last night.A.must rain
B.was raining
C.must have rained
D.may rain
正确答案:C
4.Coal was formed out of dead forests by a long and slow _______ of chemical change.A.press
B.procedure
C.success
D.process
正确答案:D
5.They got a ________ result, and they were wild with joy.A.magic
B.magician
C.magnetic
D.magical
正确答案:D
6.It's important for you to make a list of your tasks in order of _______ when you work on a project.A.suggestion
B.goal
C.priority
D.tip
正确答案:C
7.His words are _________ but the meaning is deep.A.few
B.a few
C.little
D.a little
正确答案:A
8.He had often dreamed of retiring in England and had planned to ________ down in the country.A.break
B.come
C.put
D.settle
正确答案:D
9.The young ________ interested in pop music.A.is
B.have
C.has
D.are
正确答案:D
10.He is not a child __________.A.no more
B.no longer
C.any much
D.any more
正确答案:D
11.His salary as a driver is much higher than __________.A.a porter
B.is a porter
C.that of a porter
D.as a porter
正确答案:C
12.I don't know ________ to deal with such matter.A.what
B.how
C.which
D./
正确答案:B
13.We all know that there are ________ ways of getting to know a person.A.varying
B.variety
C.various
D.various of
正确答案:C
14.We often see Henry ________ English aloud every morning in the classroom.A.read
B.reads
C.reading
D.to read
正确答案:A
15.Tom was once cheated by his friend;________ he would not trust anyone.A.hence
B.since
C.nevertheless
D.however
正确答案:A
16.From a practical point of ________, it isn't a good place to live.It is crowded and heavily polluted.A.view
B.look
C.opinion
D.value
正确答案:A
17.How much has the company ________ this year?
A.brought in
B.brought down
C.brought out
D.brought about
正确答案:A
18.Success is not won ________.It takes patience, diligence and continuing efforts.A.twilight
B.attentively
C.currently
D.overnight
正确答案:D
19.The bridge was named _______ the hero who gave his life for the cause of the people.A.after
B.for
C.because of
D.before
正确答案:A
20.In 1958 Marian Anderson ________ her country as a United Nations delegate.A.served
B.was served
C.to serve
D.serving
正确答案:A
二,判断题
1.We did the research as good as we could;however, it did not turn out to be satisfactory.A.错误
B.正确
正确答案:A
2.It was about 600 years ago that the first clock with a face and an hour hand was made.A.错误
B.正确
正确答案:B
3.The only way to influence others is to talk about what they want and show them how to get it.A.错误
B.正确
正确答案:B
4.If you wish to remain healthy, you should drink several glasses of the water every day.A.错误
B.正确
正确答案:A
5.Since their beginning, human survival has depended on their interaction with the
environment.A.错误
B.正确
正确答案:B
6.His best movie, which won several awards, was about the life of Gandhi.A.错误
B.正确
正确答案:B
7.Everyone was in his room when the bell rings.A.错误
B.正确
正确答案:A
8.Somehow, in the panic, the crew of the airplane were able to rescue nearly all of the passengers.A.错误
B.正确
正确答案:B
9.The relationship consists of a general pattern of human interference and its corresponding environmental modification.A.错误
B.正确
正确答案:B
10.Having spent his childhood in France, John is able to converse in French rather good.A.错误
B.正确
正确答案:A
第三篇:大工12秋《机械工程测试技术》在线作业2
大工12秋《机械工程测试技术》在线作业2
一、单选题(共 10 道试题,共 60 分。)
1.在工作电流为20mA,磁感应强度B=0.1T的情况下,集成霍尔元件的输出达()mV。
A.25B.35
C.15D.5
2.机械式传感器中,弹性元件的蠕变与()、载荷大小、环境温度等因素有关。
A.材料应力-松弛B.内阻尼
C.承载时间D.弹性后效
3.可以获得最大灵敏度的电桥接法是()。
A.单臂电桥接法B.半桥接法
C.全桥接法D.以上都不正确
4.对普通使用的滤波器,滤波器因数λ一般为()。
A.1-2B.2-3
C.1-5D.2-5
5.下列属于压电陶瓷材料的是()。
A.石英B.铌酸锂
C.酒石酸钾钠D.钛酸钡
6.为研究超精密切削机床运动部件的定位精确度往往要求测量精确度在()um范围内。
A.0.1-0.01B.1-0.01
C.0.1-0.001D.0.1-1
7.目前,数字示波器的带宽已达到()以上。
A.1GHzB.1MHz
C.1THzD.1KHz
8.一般来讲,利用光电效应、压电效应等物性传感器,响应较(),可工作频率范围()。
A.快,窄B.慢,宽
C.快,宽D.慢,窄
9.下列不属于光纤传感器按调制方式分类的是()。
A.频率调制B.电压调制
C.相位调制D.偏振调制
10.不属于频率调制振荡电路的是()。
A.LC振荡电路B.变容二极管调制器 C.压控振荡器D.电感振荡器
二、判断题(共 10 道试题,共 40 分。)
()1.数字示波器不可观测触发前的信号状况。
()2.电桥按其所采用的激励电源的类型可以分为直流电桥与交流电桥。
()3.有源滤波器一般使用运算放大器结构。
()4.半导体应变片的工作原理基于半导体材料的热阻效应。
()5.机械式指示仪表一般用于检测缓变或静态被测量。
()6.光电传感器工作基础是光电效应。
()7.实际的传感器的响应延迟时间越长越好。
()8.磁电式传感器的工作原理不可逆。
()9.图像传感器是一种小型的固态集成元件,它的核心部分是CCD。
()10.控制高频振荡的低频信号叫载波。
答案:在线作业2
单选题:ACCCDAACBD判断题:ABBABBAABA
第四篇:大工12秋《机械工程测试技术》在线作业1
大工12秋《机械工程测试技术》在线作业1
一、单选题(共 10 道试题,共 60 分。)
1.以下不属于表述周期信号的强度的值是()。
A.峰值B.相对均值
C.有效值D.平均功率
2.二阶系统测量装置的阻尼比一般选在()之间。
A.0.6-0.8B.0.6-0.7
C.0.5-0.6D.0.5-0.7
3.矩形窗函数的时域窗宽T变大,则主瓣宽度()。
A.不变B.变大
C.变小D.变化不定
4.()是一种不能准确预测其未来瞬时值,也无法用数学关系式来描述的信号。
A.随机信号B.准周期信号
C.瞬变非周期信号D.连续信号
5.一阶系统的激励频率ω远小于1/τ时,其A(ω)值接近于()。
A.1/4B.1/3
C.1/2D.1
6.下列不属于测量装置在测量过程中受到的环境干扰的是()。
A.电磁场B.电源
C.声D.光
7.下列不属于供电系统的抗干扰措施的是()。
A.交流稳压器B.高通滤波器
C.隔离稳压器D.独立功能块单独供电
8.电压表的示值Vi为30V,而电压实际值Vt为30.5V,则电压表的示值误差等于()。
A.0.5VB.-0.5V
C.0.25VD.-0.25V
9.描述各态历经随机信号的主要特征参数不包括()。
A.均值B.概率密度函数
C.自相关函数D.互相关函数
10.对于二阶装置,在ω=ωn处,输出对输入的相角滞后为()。
A.0°B.30° C.60°D.90°
二、判断题(共 10 道试题,共 40 分。)
()1.测试系统的中间变换装置可将被测物理量检出并转换为电量。
()2.测试技术是进行各种科学实验研究及生产过程参数测量必不可少的手段,起着人的感官的作用。
()3.一般使用理想直线的斜率作为测量装置的灵敏度值。
()4.瞬时功率对时间积分,就是信号在该积分时间内的能量。
()5.低通滤波器可用来滤去小于50Hz市电基波的高频干扰。
()6.对系统的突然加载或突然卸载可视为施加阶跃输入。
()7.随机过程可分为平稳过程和非平稳过程。
()8.在实践中,可以获得理想的单位脉冲输入。
()9.周期信号的频谱应该是连续的。
()10.时域周期单位脉冲序列的频谱并不是周期脉冲序列。
答案:在线作业1
单选题:BACADBBBDD判断题:ABBBABBAAA
第五篇:大工12秋《数控技术》在线作业1~3答案
大工12秋《数控技术》在线作业11 2 3 4 5 6 7 单选题BC B D D多选题 ACD AC AB ACD ABCD判断题 B A B B B A A
大工12秋《数控技术》在线作业21 2 3 4 5 6 7 单选题 A B D A A多选题 AB ABC ABC AD AB判断题 B A A A A B A
大工12秋《数控技术》在线作业31 2 3 4 5 6 7 单选题 D D D A A多选题AB AC AB AC ACD判断题 B A A B B B A8 9 10A B A 8 9 10B A B 8 9 10B B B