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F. The FAA was created as a result of the introduction of the jet engine.
Locate: for the advent of the jet engine suddenly resulted in a large number of very fast planes, reducing pilots’ margin of error and practically demanding some set of rules to keep everyone well separated and operating safely in the air.
Sao câu này sai vậy.
Locate: for the advent of the jet engine suddenly resulted in a large number of very fast planes, reducing pilots’ margin of error and practically demanding some set of rules to keep everyone well separated and operating safely in the air.
Sao câu này sai vậy.