单项选择题
A tug is best positioned for towing and maneuvering on rivers and other restricted waters where wave action is limited when（）.
A.directly astern and pushing the tow
B.towing on a hawser
C.towing alongside and parallel to the vessel it is towing
D.towing on the hip
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相关考题
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单项选择题
A tug is “in irons” when held in a fixed position by（）
A.the weight of its tow，its being anchored，or grounded
B.the weight of its towing hawser on the bottom
C.an adverse current
D.lack of power or an engine breakdown -
单项选择题
A tug in irons is（）.
A.rudder bound
B.being tripped by the towline
C.unable to maneuver
D.broached -
单项选择题
A tsunami is caused by a(n)（）.
A.tidal wave
B.storm surge caused by a hurricane or tropical storm
C.earthquake on the ocean's floor
D.tornado
