How does an icebreaker normally free a ship which has become beset while navigating independently?（）<br>A:By backing down the track and cutting out ice on either bow<br>B:By approaching from the stern and crossing ahead at an angle of 20°to 30°to the beset ship's course<br>C:By overtaking the beset ship，running ahead and then backing down the track to the beset vessel<br>D:By approaching the vessel from astern and towing the beset vessel stern first

How does an icebreaker normally free a ship which has become beset while navigating independently?（）
A:By backing down the track and cutting out ice on either bow
B:By approaching from the stern and crossing ahead at an angle of 20°to 30°to the beset ship's course
C:By overtaking the beset ship，running ahead and then backing down the track to the beset vessel
D:By approaching the vessel from astern and towing the beset vessel stern first

出自：海船船员证

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