A.ZERO CLEARING
B.ANTI-CLUTTER-RAIN
C.DIMMER
D.CURSOR
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A.bearing circle
B.pelorus
C.bearing bar
D.alidade
A.spider element
B.sensitive element
C.link arm
D.pickup transformer
A.high or low
B.AC or DC
C.strong or weak
D.on or off
A.gyro-compass
B.marine radar
C.DF
D.navigational satellite
A.two stations，including one on the nearest coast
B.two stations，including one on the nearer coast
C.three stations，including one on the farthest coast
D.three stations，including one on the nearest coast
最新試題
Loran-C uses the multiple pulse system because（）.
Radar makes the most accurate determination of the（）.
The receiver uses（）satellites to compute latitude，longitude，altitude，and velocity．
The loran lines drawn on navigation charts represent（）.
（）is a digitized“picture”of a chart.
Loran-C is which type of system（）.
The heading of a vessel is indicated by what part of the compass? （）
（）is not a factor which will affect the accuracy of GPS receiver.
The line connecting the Loran-C master station with a secondary station is called the（）.
When navigating using DGPS（Differential Global Positioning System）you may expect your position to be accurate to within a radius of（）.