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磁场型交通信息采集技术是利用( )进行交通信息的检测 环形线圈有一定的工作电流,当有车辆通过线圈或存在于线圈之上时,线圈的( )会发生相应的变化 环型感应线圈采集系统构成包括( ) 、接线盒、 ( ) 、 ( )等 地磁检测器的检测原理是,当铁质物体通过引起地( )异常,因此通过检测( )的异常可以判断车辆的出现与否。 地磁检测器用于交通信息采集时,分为( )和( )两种类型 地磁检测器的缺点是( )
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举一反三
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【单选题】下列关于分散系概念的描述,正确的是()
A.
分散系只能是液态体系
B.
分散系中被分散的物质称为分散相
C.
分散系为均一、稳定的体系
D.
分散系相微粒都是单个分子或离子
E.
：B
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下列哪种体系的分散相粒子能透过滤纸而不能透过半透膜（ ）
G.
粗分散系
H.
分子离子分散系
I.
胶体分散系
J.
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生理盐水
B.
蛋白质
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泥浆
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牛奶
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A.
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②③④⑤
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⑥⑦
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【单选题】I was _____ in class at 3:00 p.m. yesterday. A. to study B. study C. studying
A.
to study
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study
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相关题目：
【单选题】I was in class at 3:00 p.m. yesterday.
A.
to study
B.
study
C.
studying
查看完整题目与答案
【简答题】完形填空。 When I was about 12, a girl in my class liked to point out my problems. I was too thin; I wasn't a good student; I talked too much, I was too 1 , and so on. At last, I became very angry and ran ...
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【简答题】I can well remember that I was once asked to deliver a speech titled—A Real Test in My Life before the whole class at the age of 9! You can imagine how 1. (terrible)­shy I was the moment I thought of ...
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【单选题】下列关于分散系概念的描述,正确的是()
A.
分散系只能是液态体系
B.
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C.
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D.
分散系相微粒都是单个分子或离子
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：B
F.
下列哪种体系的分散相粒子能透过滤纸而不能透过半透膜（ ）
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H.
分子离子分散系
I.
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J.
都不是 K. ：C L. 下列几种分散系中能发生丁达尔现象的是（ ）
查看完整题目与答案
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A.
生理盐水
B.
蛋白质
C.
泥浆
D.
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查看完整题目与答案
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A.
①
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C.
⑥⑦
D.
全部
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【单选题】I was _____ in class at 3:00 p.m. yesterday. A. to study B. study C. studying
A.
to study
B.
study
C.
studying
查看完整题目与答案
【简答题】I first had physics lessons when I was in Grade Eight some years ago. In class, I 1 that there wasn’t a Nobel (诺贝尔) Prize winner from China. That made me sad, and I decided to change (改变) it. 2 after ...
查看完整题目与答案
【简答题】I used to be a very self ­ centered person , but in the past two years I have really changed.I have started to think about other people 1 I think about myself.I am happy that I am becoming a 2 person....
查看完整题目与答案