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[单选题]
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（）
A
0mmb.100mmc.50mmd.75mm
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参考答案
试题答案：
B
答案解释：
量程是指传感器在测量范围内的上限值与下限值之差。
相关题目
用热电阻传感器测温时，经常使用的配用测量电路是（）。
以下传感器中不属于参量型传感器的是（）
差动电感式位移传感器输出的电压信号是（）
某等强度梁上粘贴有四片应变片，组成全桥，电路如下图，以下四个选项中应变片的正确粘贴方式是（）
属于传感器静态特性指标的是
图像处理过程中直接检测图像灰度变化点的处理方法称为_____。
下面那种信号的频谱是连续的（）
将电阻应变片贴在( )上， 就可以分别做成测力、位移、加速度等参数的传感器。
试说明开磁路式变磁通速度传感器的优缺点。
把几个同型号热电偶的同性电极参考端相并联，并将各热电偶的测量结处于不同位置，这种并联热电偶可用于测量（）
热门试题
1.
10.Which of the following italicized parts is a subject clause?
2.
23.4 The best title for the passage might be____.
3.
24.2 The school at which Mr. Escalante taught in the US locates____.(2分)
4.
企业2009年3月购入并投入使用不需要安装设备一台，原值860万元，预计使用年限5年，预计净残值2万元，采用双倍余额递减法计提折旧，则企业在2009年应计提的折旧额为（）万元。
5.
2.The Crying GameAll normal human infants cry, although they vary a great deal in how much. A mysterious and still unexplained phenomenon is that crying tends to increase in the first few weeks of life, peak in the second or third month, and then decrease. Some babies in the United States cry so much during the peak period-often in excess of three hours a day-and seem so difficult to soothe that parents come to doubt their nurturing skills or begin to fear that their offspring (子孙后代) is suffering from a painful disease. Some mothers discontinue nursing and switch to bottle-feeding because they believe their breast milk is insufficiently nutritious and that their infants are always hungry. In extreme cases, the crying may provoke physical abuse, sometimes even precipitating (使发生) the infant's death.A look at another culture, the Kung San hunter-gatherers of southern Africa, provides us with an opportunity to see whether care-giving strategies have any effect on infant crying. Both the Kung San and Western infants escalate (使增强) their crying during the early weeks of life, with a similar peak at two or three months. A comparison of Dutch, American, and Kung San infants shows that the number of individual crying episodes are virtually identical. What differs is their length: Kung San infants cry about half as long as Western babies. This implies that care-giving can influence only some aspects of crying, such as duration.What is particularly striking about child-rearing among the Kung San is that infants are in constant contact with a caregiver; they are carried or held most of the time, are usually in an upright position, and are breast-fed about four times an hour for one to two minutes at a time. Furthermore, the mother almost always responds to the smallest cry or fret (烦躁) within ten seconds.I believe that crying was adaptive for our ancestors. As seen in the contemporary Kung San, crying probably elicited a quick response, and thus consisted of frequent but relatively short episodes. This pattern helped keep an adult close by to provide adequate nutrition as well as protection from predators. I have also argued that crying helped an infant forge a strong attachment with the mother and-because new pregnancies are delayed by the prolongation of frequent nursing-secure more of her care-giving resources.In the United States, where the threat of predation has receded (降低) and adequate nutrition is usually available even without breast-feeding, crying may be less adaptive. In any case, care-giving in the United States may be viewed as a cultural experiment in which the infant is relatively more separated-and separable-from the mother, both in terms of frequency of contact and actual distance.The Western strategy is advantageous when the mother's employment outside of the home and away from the baby is necessary to sustain family resources. But the trade-off seems to be an increase in the length of crying bouts. (490 words)(5分)2.1Why does Western infants' crying tend to increase in the first few weeks of life and peak in the second or third month?____(1分)A. The infants suffer from a painful disease.B. Their parents lack nurturing skill.C. The reason is still unknown. D. Their parents abuse the infants physically.
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