-- card: 84648 from stack: in
-- bmap block id: 0
-- flags: 0000
-- background id: 4601
-- name: #104
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on openCard
  global group,rightone
  put 9 into group
  put "A" into rightone
  pass openCard
end openCard



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Question #104

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T3A08  Which region of the ionosphere is the least useful for long-distance radio wave propagation?

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The D region

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The E region

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The F1 region

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The F2 region

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Correct answer is A