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【简答题】
煤矿常用的传感器是怎样分类的？
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反馈参考答案：
举一反三
【单选题】Adam says he's ________________, but I've seen him sneaking out of his house late at night.
A.
a open book
B.
a closed book
【单选题】Adam says that he likes ___________ but is not so interested in _________.
A.
stories, cartoons
B.
animals, plants
C.
making friends, cleaning up
【单选题】The author says Johnson found it very difficult to walk because ______.
A.
he could not control his legs
B.
he has same psychological barrier
C.
people always stared at him
D.
it hurt his friends to watch him
【单选题】The author says Johnson found it very difficult to walk because ______ .
A.
he could not control his legs
B.
he had some psychological barrier
C.
people always stared at him
D.
it hurt his friends to watch him
【判断题】当遇到紧急情况时,人们逃生往往无心注视标志及文字的内容,甚至对此缺乏信赖,往往是更为直觉地跟着领头的几个人跑动,以致成为整个人群的流向。这一习性属于聚集效应
A.
正确
B.
错误
【单选题】The author says Johnson found it very difficult to walk because ______.
A.
he could not control his legs
B.
he has some psychological barrier
C.
people always stared at him
D.
it hurt his friends to watch him
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