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单选题
A great circle track provides the maximum saving in distance on（）.
A
easterly courses in high latitudes
B
southerly courses in high latitudes
C
westerly courses in low latitudes
D
easterly courses in low latitudes that cross the equator
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更多 “单选题A great circle track provides the maximum saving in distance on（）.A easterly courses in high latitudesB southerly courses in high latitudesC westerly courses in low latitudesD easterly courses in low latitudes that cross the equator” 相关考题
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Which of the following operates in the 2.4GHz range and has a MAXIMUM distance of 10 meters (33 feet)?()
A.x-10B.BluetoothC.802.11aD.802.11b
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what is the theme of the story?A. Saving lives brings people a sense of happinessB. Fishing provides excitement for childrenC. It’s necessary to live in harmony with animalsD. it’s vital to protect the environment
考题
All straight lines represent great circle tracks on a chart based on a(n) ______.A.Mercator projectionB.polyconic projectionC.orthographic projectionD.gnomonic projection
考题
Distance along a track line is measured on a Mercator chart by using the ______.A.latitude scale near the middle of the track lineB.longitude scale near the middle of the track lineC.latitude scale at the midlatitude of the chartD.latitude or longitude scale at the middle of the scale
考题
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
考题
What is the major advantage of a rhumb line track?A.The vessel can steam on a constant heading (disregarding wind，current，etc)B.The rhumb line is the shortest distance between the arrival and departure pointsC.It is easily plotted on a gnomonic chart for comparison with a great circle courseD.It approximates a great circle on east-west courses in high latitudes
考题
When navigating in high latitudes and using a chart based on a Lambert conformal projection，______.A.a straight line drawn on the chart approximates a great circleB.the chart should not be used outside of the standard parallelsC.the course angle is measured at the mid-longitude of the track lineD.distance cannot be measured directly from the chart
考题
A fairly accurate estimation of a ship’s position can be calculated by a technique know as ___.A.dead reckoningB.pilotageC.great circle sailingD.geographic navigation
考题
In relation to the turning circle of a ship, the term advance means the distance ______.A.gained at right angles to the original courseB.gained in the direction to the original courseC.moved sidewise from the original course when the rudder is first put overD.around the circumference of the turning circle
考题
In relation to the turning circle of a ship, the term transfer means the distance ______.A.gained in the direction to the original courseB.gained at right angles to the original courseC.the ship moves sidewise from the original course away from the direction of the turn after the rudder is first put overD.around the circumference of the turning circle
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What are three factors that limit the maximum distance of an amplified optical signal without regeneration？ （）A、 fiber dispersionB、 signal attenuationC、 transmitter powerD、 amplifier bandwidthE、 receiver dispersion tolerance
考题
单选题Besides saving distance along the track line，another advantage of the Scharnow Turn over the Williamson Turn in a man overboard situation because（）.A
it is fasterB
it can be used in both the immediate action and the delayed action situationsC
in fog，if the turn is started as soon as the man goes over，the vessel will be at the point where he went over when the turn is completedD
it returns the vessel to the original track line on a reciprocal course
考题
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
shortest great circle routes
考题
单选题In relation to the turning circle of a ship , the term advance means the distance（）.A
gained at right angles to the original courseB
gained in the direction of the original courseC
moved sidewise from the original course when the rudder is first put overD
around the circumference of the turning circle
考题
单选题Which method listed below is acceptable by classification society to perform hose testing to weather tight hatch covers and closing appliances（）A
This is to be carried out at a maximum distance of 1,5m with a hose pressure not less than 2,0 kgf/cm2. The nozzle diameter is not to be less than 12mm.B
This is to be carried out at a maximum distance of 1,5m with a hose pressure not less than 3,5 kgf/cm2. The nozzle diameter is not to be less than 5mm.C
This is to be carried out at a maximum distance of 1,5m with a hose pressure not less than 4,0 kgf/cm2. The nozzle diameter is not to be less than 8mm.D
This is to be carried out at a maximum distance of 2,0m with a hose pressure not less than 2,0 kgf/cm2. The nozzle diameter is not to be less than 12mm.
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
考题
多选题What are three factors that limit the maximum distance of an amplified optical signal without regeneration？ （）Afiber dispersionBsignal attenuationCtransmitter powerDamplifier bandwidthEreceiver dispersion tolerance
考题
单选题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 equatorB
always be nearer to the elevated poleC
be nearer to the pole in the Northern Hemisphere and nearer to the equator in the Southern HemisphereD
be nearer to the pole or the equator depending on the latitudes of the arrival and departure positions
考题
单选题On a gnomonic chart，a great circle track between Los Angeles and Brisbane will appear as a （）.A
loxodromic curveB
curved line concave to the equatorC
straight lineD
spiral approaching the poles as a limit
考题
单选题In relation to the turning circle of a ship , the term transfer means the distance（）.A
gained in the direction of the original courseB
gained at right angles to the original courseC
the ship moves sidewise from the original course awayfrom the transfer means the distanceD
around the circumference of the turning circle
考题
单选题All straight lines represent great circle tracks on a chart based on a(n) （）.A
Mercator projectionB
polyconic projectionC
orthographic projectionD
gnomonic projection
考题
单选题Distance along a track line is measured on a Mercator chart by using the （）.A
latitude scale near the middle of the track lineB
longitude scale near the middle of the track lineC
latitude scale at the midlatitude of the chartD
latitude or longitude scale at the middle of the scale
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
The smallest circle that can be drawn on the face of a sphere
考题
单选题In which voyage, between two points, is the rhumb line distance not approximately the same as the great circle distance?（）.A
The two points are in low latitudes in the same hemisphereB
The two points are in high latitudes in the same hemisphereC
The two points are near the equator, but in different hemispheresD
One point is near the equator, one point is in a high latitude, and both are near the 180th meridian
考题
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
考题
单选题The distance a vessel moves parallel to the original course from the point where the rudder is put over to any point on the turning circle is called the（）.A
advanceB
drift angleC
pivoting pointD
transfer
考题
单选题The maximum distance at which a light may be seen under the existing visibility conditions is called（）.A
nominal rangeB
luminous rangeC
charted rangeD
geographic range
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