Iftheaircraftis()therunwaycenterlineextension,theairborneindicatorsdisplaynodifferenceindepthofmodulation(ddm)betweenthe90-Hzand150-Hzmodulation.
发布于 2022-02-21 02:00:12
【单选题】
A A、directly above
B B、to the left of
C C、to the right of
D D、no requirement
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