单项选择题
Which equipment is the primary source of generating a locating signal?（）
A.DSC only B.DSC and EPIRB C.SART and DSC D.EPIRB and SART
单项选择题 Which equipment is not a source of locating signals?（）
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? （）
