observer's meridian
Greenwich meridian
body's meridian
zenith distance
第1题：
The dangerous semicircle of a hurricane in the Northern Hemisphere is that area of the storm ______.
A.to the right of the storm's track
B.measured from true north clockwise to 180°T
C.measured from true north counterclockwise to 180°T
D.between the ship's heading and the bearing to the eye
第2题：
In the navigational triangle，the angle at the elevated pole is the ______．
A.meridian angle
B.altitude
C.right ascension
D.azimuth angle
第3题：
The distance between any two meridians measured along a parallel of latitude and expressed in miles is the ______.
A.difference in longitude
B.mid-longitude
C.departure
D.meridian angle
第4题：
the rudder angle indicator reading
the desired rudder angle reading
the measured rudder angle reading
the intended rudder angle reading
第5题：
第6题：
The dangerous semicircle of a typhoon in the Southern Hemisphere is that area ______.
A.measured from due south clockwise 180°
B.measured from due south counterclockwise 180°
C.to the left of the storm's track
D.ahead of the typhoon measured from the storm's track to 90°on each side
第7题：
The most accurate method of determining gyrocompass error while underway is by ______．
A.Comparing the gyro azimuth of a celestial body with the computed azimuth of the body
B.Comparing the gyro heading with the magnetic compass heading
C.Determining from the chart the course made good between celestial fixes
D.It cannot be determined accurately at sea due to drift of unknown currents
第8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9题：
Which of the following voltages can be measured from a Molex connector on the power supply?（）
第10题：
measured from due south clockwise 180°
measured from due south counterclockwise 180°
to the left of the storm's track
ahead of the typhoon measured from the storm's track to 90°on each side