easterly courses in high latitudes
southerly courses in high latitudes
westerly courses in low latitudes
easterly courses in low latitudes that cross the equator
第1题:
All straight lines represent great circle tracks on a chart based on a(n) ______.
A.Mercator projection
B.polyconic projection
C.orthographic projection
D.gnomonic projection
第2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 charts
第3题:
A.x-10
B.Bluetooth
C.802.11a
D.802.11b
第4题:
In relation to the turning circle of a ship, the term advance means the distance ______.
A.gained at right angles to the original course
B.gained in the direction to the original course
C.moved sidewise from the original course when the rudder is first put over
D.around the circumference of the turning circle
第5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 circle
B.the chart should not be used outside of the standard parallels
C.the course angle is measured at the mid-longitude of the track line
D.distance cannot be measured directly from the chart
第6题:
Distance along a track line is measured on a Mercator chart by using the ______.
A.latitude scale near the middle of the track line
B.longitude scale near the middle of the track line
C.latitude scale at the midlatitude of the chart
D.latitude or longitude scale at the middle of the scale
第7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 points
C.It is easily plotted on a gnomonic chart for comparison with a great circle course
D.It approximates a great circle on east-west courses in high latitudes
第8题:
what is the theme of the story?
A. Saving lives brings people a sense of happiness
B. Fishing provides excitement for children
C. It’s necessary to live in harmony with animals
D. it’s vital to protect the environment
第9题:
A fairly accurate estimation of a ship’s position can be calculated by a technique know as ___.
A.dead reckoning
B.pilotage
C.great circle sailing
D.geographic navigation
第10题:
In relation to the turning circle of a ship, the term transfer means the distance ______.
A.gained in the direction to the original course
B.gained at right angles to the original course
C.the ship moves sidewise from the original course away from the direction of the turn after the rudder is first put over
D.around the circumference of the turning circle