單項(xiàng)選擇題

A stretch where the channel changes from one side of theriver to the other is called a（）.

A.crossing
B.transit
C.transfer
D.passing

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單項(xiàng)選擇題

A stream of water immediately surrounding a moving vessel’s hull，flowing in the same direction as the vessel is known as（）.

A.directional current
B.forward current
C.propeller current
D.wake current

單項(xiàng)選擇題

A situation has occurred where it becomes necessary for you to be towed. What action should be taken to prevent your vessel from yawing?（）.

A.Shift weight to the bow
B.Shift weight to the center of the boat
C.Shift weight to the stern
D.Throw excess weight overboard