It was only in the late ___________ that commercial air travel took off as an affordable and widely available mode of transport.
A) 1990s
B) 1970s
C) 1950s
D) 1930s
E) 1910s
Correct Answer:
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Q8: _ are discontinuous events that significantly change
Q9: Changes in the techno-economic _ are revolutionary
Q10: Kondratiev waves refer to:
A) An approach to
Q11: A term used to describe how the
Q12: Which of these is a constituent element
Q14: The approximate total of global aircraft flights
Q15: The approximate total of passengers handled by
Q16: The approximate total of air freight shipped
Q17: This term refers to the adoption of
Q18: The expansion of internet use over the
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