A Class C EPIRB（）.<br>A:is primarily designed for vessels operating up to 50 miles offshore or on foreign waters<br>B:transmits a signal that can be detected by satellite<br>C:must be manually activated<br>D:operates in the medium and low frequency bands

A Class C EPIRB（）.
A:is primarily designed for vessels operating up to 50 miles offshore or on foreign waters
B:transmits a signal that can be detected by satellite
C:must be manually activated
D:operates in the medium and low frequency bands

出自：海船船员证

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