A.bearing circle
B.pelorus
C.bearing bar
D.alidade
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A.RINGS INT
B.SWEEP INT
C.REPEATER
D.GONIOMETER
A.in high latitudes
B.near the equator
C.on north or south headings
D.on intercardinal headings
A.remains aligned with compass north
B.also turns to starboard
C.first turns to starboard then counterclockwise to port
D.turns counterclockwise to port
A.true bearing of the transmitter
B.relative bearing of the transmitter
C.heading of the vessel
D.time of reception
A.varies depending upon the bearing used
B.is the angular difference between magnetic north and compass north
C.is published on the compass rose on most nautical charts
D.is the angular difference between geographic and magnetic meridians
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The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
Loran-C is which type of system（）.
Most modern Loran-C receivers，when not tracking properly，have a（n）（）.
If the radio signal ground wave extends out for less distance than the minimum skywave distance，there is an area in which no signal is received．This is called the（）.
The loran lines drawn on navigation charts represent（）.
When your vessel is proceeding to the area of traffic density，（）is used to determine the exact ranges of other ships or objects in the vicinity.
（）is not a component of GPS.
In using Loran-C，skywave reception gives greater range but is（）.
（）is a digitized“picture”of a chart.
Radar makes the most accurate determination of the（）.