Which device provides the main means in the GMDSS for locating ships in distress or their survival craft（）.<br>A:Radio direction finder<br>B:Satellite EPIRBs<br>C:MF/HF DSC<br>D:VHF homing device

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

出自：海船船员证

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