航海英语航海学基本知识章节练习(2019.03.11)

单项选择题
Except for N-S courses，and E-W courses on the equator，a great circle track between two points，when compared to a rhumb line track between the same two points，will（）.
A.always be nearer to the equator
B.always be nearer to the elevated pole
C.be nearer to the pole in the Northern Hemisphere and nearer to the equator in the Southern Hemisphere
D.be nearer to the pole or the equator depending on the latitudes of the arrival and departure positions
单项选择题
A plane that cuts the Earth’s surface at any angle and passes through the center will always form（）.
A.the equator
B.a great circle
C.a small circle
D.a meridian
单项选择题
A lighthouse can be identified by its（）.
A.painted color
B.light color and phase characteristic
C.type of structure
D.All of the above
单项选择题
Buoys which mark isolated dangers are painted with alternating（）.
A.red and black bands
B.green and black bands
C.red and white stripes
D.green and white bands
单项选择题
A yellow buoy may exhibit a(n)（）.
A.fixed red light
B.flashing light
C.white light
D.occulting light
单项选择题
An orange and white buoy with a rectangle on it displays（）.
A.directions
B.distances
C.locations
D.All of the above
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
A plane perpendicular to the polar axis will never form what line on the Earth’s surface? （）
A.Great circle
B.Equator
C.Small circle
D.Meridian
单项选择题
A rock and sand structure extending from the bank of the river toward the channel is known as a（）.
A.wingdam
B.towhead
C.cutoff
D.landwall
单项选择题
Buoys which only mark the left or right side of the channel will never exhibit a light with which characteristic? （）
A.Flashing
B.Quick flashing
C.Composite group flashing
D.Equal interval (isophase)