首页
普通专升本
成人高考
学位英语
在线刷题
最近学习
最近学习课程
最强大脑 · 3天挑战极限记...
副标题副标题副标题副
最强大脑 · 3天挑战极限记...
副标题副标题副标题副
您现在位置:
模拟考场
>
湖北自学考试
>
专业课
>
传感器与检测技术
>
浏览试题
[单选题]
半导体应变片具有()等优点。
A
A灵敏度高
B
温度稳定性好
C
可靠性高
D
接口电路复杂
收藏
查看答案
参考答案
试题答案:
A
答案解释:
相关题目
用于识别条形码的激光视觉传感器中,起扫描作用的关键部件是()
载波频率为调制信号的最高频率为,两者的关系为()
在传感器的基本组成中完成非电量到电量之间转化的重要元件是()
某位移传感器可测位移的下限为0mm,上限为100mm,那么该位移传感器的量程为()
简述压磁式扭矩仪的二工作原理。
若模/数转换器输出二进制数的位数为10,最大输入信号为2.5V,则该转换器能分辨出的最小输入电压信号为
传感检测系统目前正迅速地由模拟式、数字式,向_____方向发展。
简述机器人中常用位移传感器的类型。
涡流式传感器测量位移与其它位移传感器比较,其主要优点是什么?涡流传感器能否测量大位移量?为什么?
三坐标测量机中的_____测量 系统,是利用奠尔条纹原理检测坐标的移动量。
热门试题
1.
主要用于病因预防的抗疟药为( )
2.
容错
3.
3. Friction is a force which opposes motion. Much of the energy supplied to a complicated machine with many moving parts is wasted in overcoming this opposition. The energy is converted into useless heat. The amount thus lost can be considerably reduced and the life of the machine prolonged by careful lubrication. This reduction improves the efficiency of the machine. Another way in which friction is reduced is to substitute roller or ball bearings for the earlier type of bearing, in which the surfaces in contact move by sliding. Bearings of these later types are used very extensively in many kinds of modern machinery.It must not be assumed, however, that friction is always a disadvantage. In many instances it is highly important. Belts are often used in conveying power from one machine to another. In the absence of friction, this could not be done. The driving wheel would not run the belt, neither would the belt run the wheel to driver. Without friction, then, belted machinery could not be used. Again in the case of all motor vehicles, friction is essential in the operation of the brake. Were there no friction, there could be no brake. But even this illustration does not give an adequate picture of the importance of friction. The vehicle could not even be started if it were not for the friction exerted between the tires and the road. Nails hold in wood, and screws hold in either wood or metal by reason of friction, without which they would be useless. Walking is difficult enough on an icy pavement, but it would be wholly impossible if there were no friction at all between the shoe and the pavement.(5分)3.1 Friction arises when____.(1分)A. an opposing force of motion exists B. the energy is wastedC. everything is motionlessD. a complicated machine is supplied with energy
4.
查看材料这段文字分为四层,请简要概括每层的意思。
5.
目前我国关于土地保护的一部最主要的一部法律是()
热门试卷
成人高考专升本《政治》模拟试卷
去做题
已有3418做题
2020年湖北成人高考专升本政治模拟试题三
去做题
已有2214做题
成人高考专升本政治考试模拟试题及答案(1)
去做题
已有1901做题
湖北成考专升本政治真题(2021年)
去做题
已有1366做题
湖北成考高起点语文真题(2021年)
去做题
已有1233做题