单选题（）is the process by which the position of the vessel at any moment is found by applying the last well-determined position to the run that has been made since，using for this purpose the ship’s course and the distance being those indicated by log.Adead reckoningBdead weightCdead slow aheadDdead slow astern
单选题
（）is the process by which the position of the vessel at any moment is found by applying the last well-determined position to the run that has been made since，using for this purpose the ship’s course and the distance being those indicated by log.
A
dead reckoning
B
dead weight
C
dead slow ahead
D
dead slow astern
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