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Author Question: Because of the curvature of the earth, microwave systems that must travel over long distances need ... (Read 43 times)

TFauchery

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on: Jul 7, 2018
Because of the curvature of the earth, microwave systems that must travel over long distances need ________.
 
  A) to operate at low frequencies
  B) to operate at high frequencies
  C) repeaters
  D) mirrors

Question 2

Electronic commerce is an interdisciplinary field.
 
  Indicate whether the statement is true or false


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sylvia

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Reply #1 on: Jul 7, 2018
Answer to Question 1

C

Answer to Question 2

TRUE


TFauchery

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Reply 2 on: Jul 7, 2018
Wow, this really help

xiaomengxian

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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