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【单选题】
磁性开关中的干簧管是利用（）来控制的一种开关元件。A.
磁场信号
B.
压力信号
C.
温度信号
D.
电流信号
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举一反三
【简答题】Just as mankind has always had a desire to fly, the human race has wanted to swim under the water since prehistoric times. Pictures of primitive devices to enable people to breathe underwater have bee...
【单选题】We can’t lay too much ________ on the importance of health.
A.
emphasis
B.
foundation
C.
focus
D.
strength
【多选题】调查报告主体部分的结构形式包括（）
A.
根据调查对象本身所具有的时间顺序从纵的角度描述和分析
B.
根据调查对象本身包含的不同特征或不同方面，从横的角度来描述和分析
C.
纵横结合，以其中一种为主
D.
上下左右面面俱到，以全面反映调查对象的特征
E.
纵横结合，形成网络式结构以完整反映社会现象
【单选题】The Si he yuan is not _________ just the north of the country.
A.
laid out
B.
limited to
C.
put up with
D.
referred to
【简答题】Part Three Reading comprehension Passage One Imagine waking up and finding the value of your assets has been halved. No, you ’ re not an investor in one of those hedge funds that failed completely. Wi...
【判断题】The four valence electrons of As allow it to bond just like Si but the fifth electron is left orbiting the As site.
A.
正确
B.
错误
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