词汇与结构In order to follow the ground track, the pilot must adjust ______ to compensate for the wind.
A. heading
B. altitude
C. attitude
D. speed
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词汇与结构Initially, the pilot needs to ______ headings to fly for each leg of the trip prior to departure.
A. estimate
B. assess
C. figure
D. calculate
词汇与结构The ______ authorities will provide the forecast wind directions and speeds for pilots.
A. aeronautical
B. nautical
C. meteorological
D. physical
词汇与结构The ______ nature of the weather means that the pilot must be prepared to make further adjustments in flight.
A. predictable
B. unpredictable
C. prepared
D. unprepared
词汇与结构The primary instrument of navigation is the ______ compass.
A. magnetic
B. magic
C. material
D. magnificent