单项选择题
Which equipment is not a source of locating signals?（）
A.EPIRB's that transmit on 406 MHz B.Survival craft VHF transceivers that provide a beacon on 121.5 MHz C.COSPAS-SARSAT EPIRBs D.SARTs operating on 9 GHz
单项选择题 Which emergency is required to be covered at the required periodic drills on a fishing vessel?（）
单项选择题 Which emergency equipment should you keep near the towing bitts? （）
单项选择题 Which conditions will normally cause a SART to operate in the active mode?（）
