When testing a Class A EPIRB you will know the EPIRB is working properly if you hear on 99.5 Mhz FM or any vacant frequency on a nearby AM radio().

A . a distinctive signal B . the Morse Code signal for SOS C . a computerized voice announcement of Mayday D . your vessel's International Radio Call Sig

时间:2022-09-16 11:09:45 所属题库:建设工程经济(一建)题库

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