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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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单选题Risk of collision exists when an approaching vessel has a(n)（）.A
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ff overheat is found, the engine must be stopped for inspectionB
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The buoy should be considered to always be in the charted locationB
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The buoy should be considered to be in the charted position if it has been freshly painted
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单选题When a feature remains in its existing charted position but has a change of characteristic,（）command is used on a chart.A
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考题
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all scales are kept updated for vital information by Notices to MarinersC
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the mariner using the medium scale charts for passage along a coast need not transfer on to a large scale for short distances
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单选题Charted depth is the （）.A
vertical distance from the chart sounding datum to the ocean bottom，plus the height of tideB
vertical distance from the chart sounding datum to the ocean bottomC
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单选题When using the radar for navigating（）.A
the best fix is obtained by using a tangent bearing and a rangeB
and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearingsC
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单选题A radar range to a small，charted object such as a light will provide a line of position in which form? （）A
Straight lineB
ArcC
ParabolaD
Hyperbola
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