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下列设备的运行与电磁波无关的是

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  • 【名词&注释】

    汶川大地震、心理学家(psychologist)、中国学生(chinese students)、全球卫星定位系统(global positioning system)、指挥中心(command center)、举例说明(illustrate)、卫星电话(satellite telephone)、公共场合(public contexts)、可观察到、通讯联系

  • [单选题]下列设备的运行与电磁波无关的是

  • A. “嫦娥一号”接收地面指挥中心的运行指令实现变轨而奔向月球
    B. 汽车上安装有GPS(全球卫星定位系统)以确定行驶路线和距离
    C. 在汶川大地震发生后,救灾人员利用卫星电话(satellite telephone)恢复了与外界的通讯联系
    D. 医院里,医生利用B超可观察到母体内的婴儿情况

  • 查看答案&解析 点击获取本科目所有试题
  • 举一反三:
  • [单选题]16.
  • A. ask for
    B. instead of
    C. except for
    D. because of

  • [单选题]--Excuseme.MayIuseyoureraser,please?--Sure.______
  • A. Watchout!
    B. Welldone!
    C. Goahead.
    D. Followme.

  • [单选题]下列物质中,不能提供动物生命活动所需能量的是
  • A. 葡萄糖
    B. 油脂
    C. 蛋白质
    D. 水

  • [单选题]1. Don't talk loudly _______public. Because it's a bad manner.
  • A. in
    B. on
    C. at
    D. between

  • [单选题]Thereis________wrongwiththiscomputer.Itdoesn’tworkwell.
  • A. something
    B. anything
    C. everything
    D. nothing

  • [单选题]28. The underlined word "relatives" means "_______ " in Chinese.A . 律师
  • A. 亲属
    B. 裁判
    C. 经理

  • [单选题]6. In the world a great number of people ________to study Chinese.
  • A. starts
    B. has started
    C. start
    D. was started

  • [单选题]17.
  • A. like
    B. unlike
    C. as
    D. for example

  • [单选题]Do you know how to study better and make your study more effective(有效率的)? We all know that Chinese students usually study very hard for long (11) .This is very good,but it doesn't (12)a lot,for an efficient student must have enough sleep,enough food and enough rest and exercise. Every day you need to go out for a walk or visit some friends or some places. lt' s good for your study.When you return (13) your study,your mind will be refreshed and you'll learn more (14) study better. Psychologists(心理学家)(15) that learning takes place this way. Here takes English learning (16) example. First you make a lot of progress and you feel happy. Then your language study seems (17) the same,so you will think you're learning (18) and you may give up. This can last for days or even weeks,yet you needn't give up. At some points your language study will again take another big (19) . You will see that you really have been: learning all long. lf you get enough sleep,food,rest and exercise,studying English can be very. effective and (20) Don-t give up along the way learning slowly and you're sure to a
  • C. days
    D. time
    E. hours
    F. weeks

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