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[单选题]
以下传感器中不属于非接触式测温传感器的为（）
A
全辐射式温度传感器
B
热电偶
C
亮度式温度传感器
D
比色式温度传感器
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参考答案
试题答案：
B
答案解释：
热电偶是利用热传递原理测温的，属于接触式传感器，其它三个选项都是非接触式测温。
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调幅过程相当于在时域中将调制信号与载波信号（）。
下图所示的四条曲线均为热敏电阻的温度-电阻特性曲线，其中那一条是负温度系数热敏电阻（）
下面那种信号的频谱是连续的（）
平板型电容式角位移传感器属于
简述视觉传感器接收部分的组成和功能。
结构型传感器是依靠传感器()的变化实现信号变换的。
全辐射式温度传感器利用物体在全光谱范围内总辐射能量与温度的关系测量温度。全辐射式温度传感器测得的温度与物体的实际温度相比总是（）
以下传感器中不属于非接触式测温传感器的为（）
说明薄膜热电偶式温度传感器的主要特点。
属于传感器动态特性指标的是
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生产时间的组成部分包括（ ）A.劳动时间B.自然力独立作用于劳动对象的时间C.生产资料的储备时间D.出售商品实现其价值的时间E.正常的停工时间
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CPU通过I/O接口发出的用于控制输入输出设备启动、停止的控制信息是( )A.通过控制总线传送的B.通过地址总线传送的C.通过数据总线传送的D.通过专用总线传送的
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2.No poem should ever be discussed or "analyzed", until it has been read aloud by someone, teacher or student. Better still, perhaps, is the practice of reading it twice, once at the beginning of the discussion and once at the end, so the sound of the poem is the last thing one hears of it. All discussions of poetry are, in fact, preparations for reading it aloud, and the reading of the poem is, finally, the most telling "interpretation" of it, suggesting tone, rhythm, and meaning all at once. Hearing a poet read the work in his or her own voice, on records or on film, is obviously a special reward. But even those aids to teaching can not replace the student and teacher reading it or, best of all, reciting it. I have come to think, in fact, that time spent reading a poem aloud is much more important than "analyzing" it, if there isn't time for both. I think one of our goals as teachers of English is to have students love poetry. Poetry is "a criticism of life", "a heightening of life, enjoyment with others". It is "an approach to the truth of feeling", and it "can save your life" It also deserves a place in the teaching of languages and literature more central than it presently occupies. I am not saying that every English teacher must teach poetry. Those who don't like it should not be forced to put that dislike on anyone else. But those who do teach poetry must keep in mind a few things about its essential nature, about its sound as well as its sense, and they must make room in the classroom for hearing poetry as well as thinking about it.(10分)2.1 According to the passage, to have a better understanding of a poem, the best way is____(2分)A. to discuss it with othersB. to analyze it by oneselfC. to hear it read outD. to practice reading it aloud
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