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单选题
What defines a great circle? （）
A
A curved line drawn on a Mercator Chart
B
A course line that inscribes a loxodromic curve
C
The shortest distance between any two points on the earth
D
The smallest circle that can be drawn on the face of a sphere
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单选题Solid green arrows on the main body of a pilot chart indicate （）.A
prevailing wind directionsB
prevailing ocean current directionsC
probable surface current flowD
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考题
单选题What is NOT an advantage of the rhumb line track over a great circle track? （）A
Easily plotted on a Mercator chartB
Negligible increase in distance on east-west courses near the equatorC
Does not require constant course changesD
Plots as a straight line on Lambert conformal charts
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单选题The equator is（）.A
the primary great circle of the Earth perpendicular to the axisB
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考题
单选题On a gnomonic chart，a great circle track between Los Angeles and Brisbane will appear as a （）.A
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单选题What is the purpose of a zone in JUNOS Software？（）A
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考题
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考题
单选题What defines a great circle? （）A
A curved line drawn on a Mercator ChartB
A course line that inscribes a loxodromic curveC
The shortest distance between any two points on the earthD
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考题
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4πB
8πC
12πD
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考题
单选题If the ratio of the area of a sector to the area of the circle is 2：3. what is the ratio of the length of the arc in the sector to the circumference of the circle?A
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单选题1 nautical mile is the lenth of an arc of a great circle which subtends an angel of（）at the center of the Earth.A
1degreeB
1 minuteC
1secondD
1.5 degree
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