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Some people have a very poor sense of direction. Unluckily, I am one of them. I have visited a place many times but I may still get lost there the next time. When I was a little girl, I never dared to ask strangers the way. And so I used to walk around in circles and hope that by chance I would get to the place I was going to. Now, I am no longer too shy to ask people for directions, but I often receive helpless or even wrong information. So I try to avoid giving people wrong directions. If anyone ever asks me the way somewhere, I would say, “Sorry, I am a stranger here.” Once on my way to work I was stopped by a man. He asked me if I could tell him the way to the Friendship Building. I gave him my usual reply. But just as I walked on only a few steps. I realized that he had asked the way to my office building. However, I had no time to turn back and look for him. I was rushing to meet with someone at my office and I didn’t want to keep him waiting. When I just got to my office, the secretary(秘书) showed in the man who had asked me for directions. Imagine how embarrassed I was and how surprised he was when we saw each other at the first sight. 小题1:The writer always refuses to give people directions because _____________. A.she is a stranger to the city B.she doesn’t know the people C.she has no time to help others D.she’s afraid of giving wrong direction 小题2: A man stopped the writer on the way to _____________. A.sell her something B.ask her the time C.make friends with her D.ask for the direction 小题3:The Friendship Building is the place where the writer ______________. A.lives B.studies C.works D.teaches 小题4:The words “embarrassed” in the paragraph means “___________”. A.尴尬 B.困惑 C.激动 D.拮据 小题5:Which of the following is TRUE according to the passage? A.The writer is too shy to give others directions. B.The writer has a very poor sense of direction. C.The writer never got lost when she was young. D.The man was quite nervous when he saw the writer.
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【简答题】蚕蚀性角膜溃疡的发病机制、相应的临床表现
【简答题】式传感器是把被测的非电量变化转换为传感器线圈的互感系数的变化。
【判断题】149重力是万有引力与离心力的合力,重力的方向称为铅垂线方向。该表述()
A.
正确
B.
错误
【简答题】把被测的非电量变化转换为线圈互感量变化的传感器称为 传感器。这种传感器是根据变压器的基本原理制成的, 并且次级绕组都用差动形式连接,故称差动变压器式传感器,简称差动变压器。
【单选题】差动变压式式电感传感器是把被测量转换为 的变化的原理进行测量的。
A.
线圈自感
B.
线圈互感
C.
电阻
D.
电容
【判断题】重力是万有引力与离心力的合力,重力的方向称为铅垂线方向。
A.
正确
B.
错误
【单选题】把被测的非电量变化转换为线圈互感量变化的传感器称为互感式传感器。这传感器是根据变压器的基本原理制成的,并且次级绕组都采用差动形式连接,故称为( )。
A.
自感式传感器
B.
变磁阻式传感器
C.
差动变压器式传感器
D.
应变式传感器
【判断题】重力是万有引力与离心力的合力,重力的方向称为铅垂线方向。该表述()
A.
正确
B.
错误
【单选题】下列关于差动变压器的叙述不正确的是( )
A.
差动变压器是把被测量的非电量转换成线圈互感量的变化。
B.
差动变压器的两个初级绕组的同名端反向串联,而两个次级绕组的同名端则顺向串联。
C.
差动变压器结构分为变隙式、变面积式和螺线管式。
D.
差动变压器传感器可以直接用于位移测量,也可以测量与位移相关的任何机械量。
【判断题】重力是万有引力与离心力的合力,重力的方向称为铅垂线方向。
A.
正确
B.
错误
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