-- card: 33204 from stack: in
-- bmap block id: 0
-- flags: 4000
-- background id: 4601
-- name: #106
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on openCard
  global group,rightone
  put 9 into group
  put "B" into rightone
  pass openCard
end openCard



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Question #106

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T3A10  What two sub-regions of ionosphere exist only in the daytime?

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Troposphere and stratosphere

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F1 and F2

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Electrostatic and electromagnetic

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D and E

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Correct answer is B