航海英语潮汐与涌浪章节练习(2018.01.23)

单项选择题
The Brazil Current flows in which general direction? （）
A.Northwesterly
B.Southwesterly
C.Southerly
D.Northerly
单项选择题
River currents tend to（）.
A.pick up speed where the channel widens
B.run slower in the center of the channel
C.hug the inside of a bend
D.cause the greatest depth of water to be along the outside of a bend
单项选择题
A structure，usually made of stone，or cement pilings，which extends from the bank at approximately right angles to the current is called a（）.
A.dike
B.revetment
C.cutoff
D.crib
单项选择题
Tides are superimposed on nontidal rising and falling water levels，caused by（）．
A.freshets
B.floods
C.river flows
D.seismic events
单项选择题
The type of current which will have the greatest effect on the course made good for your vessel is（）.
A.one flowing in the same direction as your course steered
B.one flowing in the opposite direction as your course steered
C.one that flows at nearly right angles to your course steered
D.a rotary current in which the direction of current flow constantly changes
单项选择题
The easiest way to anchor a vessel in a current is to（）.
A.stem the current and make very slow headway when the anchor is dropped
B.stem the current and be falling aft very slowly when the anchor is dropped
C.stem the current and endeavor to make neither headway nor sternway when the anchor is dropped
D.stop all headway through the water and keep the current astern when the anchor is dropped
单项选择题
The set of the current is the（）.
A.speed of the current at a particular time
B.maximum speed of the current
C.direction from which the current flows
D.direction in which the current flows
单项选择题
You are anchoring in a river where the current is from one direction only.The best way to lay out two anchors is to have them（）.
A.Directly in line with the bow
B.Side by side，with their lines on the port and starboard side
C.So that their lines form an angle
D.On top of one another
单项选择题
The Benguela Current flows in a（）.
A.SW'ly direction along the NW coast of Africa
B.S'ly direction off the East Coast of Australia
C.NW'ly direction along the SW coast of Africa
D.SW'ly direction along the SE coast of Greenland
单项选择题
The movement of water away from the shore or downstream is called a(n)（）.
A.reversing current
B.ebb current
C.flood current
D.slack current