An aircraft at 3,000ft AGL and 69 miles from a specific VHF ground station may improve reception by _________.
A.descending to a lower altitude
B.decreasing the altimeter setting
C.increasing the volume
D.climbing to a higher altitude
正确答案是D
An aircraft at 3,000ft AGL and 69 miles from a specific VHF ground station may improve reception by _________.
A.descending to a lower altitude
B.decreasing the altimeter setting
C.increasing the volume
D.climbing to a higher altitude
正确答案是D