航海英語海圖及海圖作業(yè)單項選擇題每日一練(2019.05.08)

單項選擇題
The path that a vessel is expected to follow，represented on a chart by a line drawn from the point of departure to the point of arrival，is the（）.
A.DR plot
B.track line
C.heading
D.estimated course
單項選擇題
The chart symbol indicating that the bottom is coral is （）.
A.C
B.Cl
C.Co
D.c
單項選擇題
The chart of a beach area shows a very flat slope to the underwater beach bottom. What type of breakers can be expected when trying to land a boat on this beach? （）
A.Surging
B.Spilling
C.Plunging
D.Converging
單項選擇題
Which information does the outer ring of a compass rose on a nautical chart provide（）.
A.variation
B.true directions
C.magnetic directions
D.annual rate of variation change
單項選擇題
（）is a term denoting the determination of a ship’s position by observations of Celestial or terrestrial objects，or by a combination of both．
A.Course-planning
B.Position-fixing
C.Radar-plotting
D.Stowage-plan making

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