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发布时间: 1970-01-01

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1最佳选择题 3分

PleaseFastenYourSeatbeltsSevereturbulence湍流cankill

  • A. A not very rough storm.
  • B. Unexpected disturbed air.
  • C. A kind of visible storm.
  • D. A storm over mountain ridges.
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正确答案: -

本题解析: 暂无解析

2最佳选择题 3分

PleaseFastenYourSeatbeltsSevereturbulence湍流cankill

  • A. causing a lot of damage to the plane.
  • B. throwing its passengers out of the cabin.
  • C. resulting in heavy casualties.
  • D. forcing the pilot to make an emergency landing.
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本题解析: 暂无解析

3最佳选择题 3分

PleaseFastenYourSeatbeltsSevereturbulence湍流cankill

  • A. the speed of the plane.
  • B. the speed of the light.
  • C. the number of particles in the air.
  • D. the changes of the particles’ speed.
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本题解析: 暂无解析

4最佳选择题 3分

PleaseFastenYourSeatbeltsSevereturbulence湍流cankill

  • A. the lidar detector can successfully forecast turbulence.
  • B. researchers are not sure about the effectiveness of the lidar detector.
  • C. passenger planes will be used in further experiments.
  • D. no more test flights are needed.
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本题解析: 暂无解析

5最佳选择题 3分

PleaseFastenYourSeatbeltsSevereturbulence湍流cankill

  • A. the lidar detector needs improvement.
  • B. many airlines are interested in the system.
  • C. passengers often forget to fasten their seatbelts.
  • D. the lidar detector can be used in a wide range of areas.
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本题解析: 暂无解析

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