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What does the DSC control unit do if the GMDSS radio operator fails to insert updated information when initiating a DSC distress alert（）.
A:It will abort the transmission and set off an audible alarm that must be manually reset
B:It will initiate the DSC distress alert but，as no information will be transmitted，rescue personnel will not be able to identify the vessel，its position or its situation
C:It will initiate the DSC distress alert and default information will automatically be transmitted
D:It will initiate the DSC distress alert，but any station receiving it will have to establish contact with the distressed vessel to determine its identity，position and situation

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出自：海船船员证

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