单选题Which device provides the main means in the GMDSS for locating ships in distress or their survival craft（）.ARadio direction finderBSatellite EPIRBsCMF/HF DSCDVHF homing device
单选题
Which device provides the main means in the GMDSS for locating ships in distress or their survival craft（）.
A
Radio direction finder
B
Satellite EPIRBs
C
MF/HF DSC
D
VHF homing device
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