A、a ship is threatened by grave and imminent danger and requests immediate assistance
B、a calling station has an urgent message about the safety of a person
C、the message following the prefix will be about the safety of navigation
D、the message following is a meteorological warning
更多“In radiotelephone communications，the prefix PAN-PAN indicates that（）.”相关的问题
A、you must visually signal oncoming vessels B、you must immediately tie up in the nearest port until the radiotelephone is repaired C、you must anchor until the radiotelephone is repaired D、the loss of the radiotelephone must be considered in navigating the vessel
A、You must visually signal oncoming vessels B、You must immediately tie up in the nearest port until the radiotelephone is repaired C、You must anchor until the radiotelephone is repaired D、The loss of the radiotelephone must be considered in navigating the vessel
A、There cannot be a radiotelephone located anywhere except in the wheelhouse B、The officer in charge of the wheelhouse is considered to have the radiotelephone watch C、Only distress messages may be transmitted over channel 13 D、Only the Master of the vessel is allowed to speak over the radiotelephone
A、Distress and alarm signals transmitted or intercepted B、Times of beginning and end of watch period C、Routine navigational traffic D、Daily statement about the condition of the required radiotelephone equipment
A、constitutes a violation of the Act B、obligates the operator to moor or anchor the vessel immediately C、requires immediate，emergency repairs D、does not，in itself，constitute a violation of the Act
A、A.the Master or person in charge of the vessel B、B.a person designated by the Master C、C.a person on board to pilot the vessel D、D.All of the above
A、A.a message about the safety of navigation will follow B、B.a message of an urgent nature about the safety of a ship will follow C、C.the sender is in distress and requests immediate assistance D、D.you should secure your radiotelephone
A、A.a message about the safety of navigation will follow B、B.a message of an urgent nature about the safety of a ship will follow C、C.the sender is in distress and requests immediate assistance D、D.you should secure your radiotelephone
A、Mate's license B、Restricted radiotelephone operator permit C、Second-class radio operator's license D、Seaman's document
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