To make sure of getting the full advantage of a favorable current，you should reach an entrance or strait at what time in relation to the predicted time of the favorable current?（）<br>A:One hour after the predicted time<br>B:At the predicted time<br>C:30 minutes before flood，one hour after an ebb<br>D:30 minutes before the predicted time

To make sure of getting the full advantage of a favorable current，you should reach an entrance or strait at what time in relation to the predicted time of the favorable current?（）
A:One hour after the predicted time
B:At the predicted time
C:30 minutes before flood，one hour after an ebb
D:30 minutes before the predicted time

出自：海船船员证

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