单项选择题
To secure a vessel in a particular place by means of chains or ropes made frast to the shore, to anchors, or to anchored mooring buoys, or to ride with both anchors down defines（）.
A.To moor B.to berth C.to anchor D.to ride at anchor
单项选择题 Transverse movement of cargo, especially bulk, caused by rolling or a heavy list defines（）.
单项选择题 What is your latest tropical storm warning（）?
单项选择题 When a wind is permanently changing the direction from which it blows, it is（）.
