单选题The Class A EPIRB transmits a signal().Athat follows the curvature of the earthBthat can be picked up by SARSAT satelliteCthat activates an alarm on board nearby aircraftDto alert shore stations and then transmits a homing signal
单选题
The Class A EPIRB transmits a signal().
A
that follows the curvature of the earth
B
that can be picked up by SARSAT satellite
C
that activates an alarm on board nearby aircraft
D
to alert shore stations and then transmits a homing signal
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