_______ is the ratio of true airspeed to the speed of sound.
选项:
A:Mach number
B:Speed
C:Rate
D:Airspeed ratio
E:1
发布时间:2024-05-11 21:08:15
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altimeter,vertical speed indicator,and ground speed indicator
B:airspeed indicator,vertical speed indicator,and heading indicator
C:vertical speed indicator,altimeter,and airspeed indicator
D:tachometer,odometer,and vertical speed indicator