A.provide safety-related information automatically to shore stations，other vessels and aircraft
B.receive safety-related information automatically from similarly equipped vessels
C.exchange safety-related information with shore-based facilities
D.All of the above
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A.He space component
B.Control component
C.User component
D.Alarming component
A.Deviating from a planned route
B.Approach to waypoints and other critical points
C.Light house detecting
D.Larger scale chart available
A.detective Availability
B.local environmental conditions
C.autonomous mode versus differential correction mode versus RTCM mode
D.the averaging of recorded locations
A.Vector chart format
B.Raster chart data
C.pixel
D.Electronic Nautical Chart
A.Card
B.Needle
C.Lubber's line
D.Gimbals
最新試題
Automatic identification systems（AIS）are required to（）.
The information received by AIS will be displayed on（）.
Loran-C is which type of system（）.
With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.
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 correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.
What does not contribute to the commercial GPS receiver position error（）.
The operator of the ship’s radiotelephone，if the radiotelephone is carried voluntarily，must hold at least a（）.
Which of the following statements is TRUE regarding crane operations（）.
Loran-C uses the multiple pulse system because（）.