默认题库 - 海图及海图作业

单选题

Which aid is NOT marked on a chart with a magenta circle? （）

Aero light
B. Radar station
C. Radar transponder beacon
D. Radiobeaco

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单选题

The survey information upon which a chart is based is found （）.

A. at the top center of the next line
B. near the chart title
C. at the lower left corner
D. at any convenient locatio

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单选题

The description Racon beside an illustration on a chart would mean a （）.

A. radar conspicuous beacon
B. circular radiobeacon
C. radar transponder beacon
D. radar calibration beaco

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单选题

What is NOT an advantage of the rhumb line track over a great circle track? （）

A. Easily plotted on a Mercator chart
B. Negligible increase in distance on east-west courses near the equator
C. Does not require constant course changes
D. Plots as a straight line on Lambert conformal chart

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单选题

The numeral in the center of a wind rose circle on a pilot chart indicates the （）.

A. total number of observations
B. average wind force on the Beaufort scale
C. average wind force in knots
D. percentage of calm

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单选题

The chart symbol indicating that the bottom is coral is （）.

A. C
B. Cl
Co
D. c

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单选题

The agonic line on an isomagnetic chart indicates the （）.

A. magnetic equator
B. magnetic longitude reference line
C. points where there is no variation
D. points where there is no annual change in variatio

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单选题

Solid green arrows on the main body of a pilot chart indicate （）.

A. prevailing wind directions
B. prevailing ocean current directions
C. probable surface current flow
D. shortest great circle route

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单选题

My position has been obtained （） astronomical observation．

A. with
B. from
C. on
D. by

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单选题

A true bearing of a charted object，when plotted on a chart，will establish a （）.

A. fix
B. line of position
C. relative bearing
D. range

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