Test yourself: 5 hard theory questions, free Airspace, weather, regs and aerodynamics, FAA-style — instant score, every answer explained. No signup.
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A trough on a pressure chart is:
A
A warm sector
B
An elongated area of high pressure
C
The center of a hurricane
D
An elongated area of low pressure
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See where you stand: 5 hard questions, instant score, every answer explained.