A.radar transponder beacon
B.radar conspicuous beacon
C.radar calibration beacon
D.circular radiobeacon
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A.off／standby
B.standby／off
C.standby／close
D.close／standby
A.keeping a close watch and lookout
B.taking a radar range and bearing
C.observing a radar target and listening to signals
D.keeping a well clear caution
A.immediately when the contact is noted on radar
B.only if the radar scope is watched constantly
C.after the contact has been marked at least twice
D.by an occasional glance at the radar
A.the radar reflectors reflect better signals
B.fog horn signals travel farther to sea
C.it is equipped with strobe lights
D.it has a reduced watch circle
A.are tracked on reciprocal bearings
B.are tracked at the same range
C.are tracked on the same bearing
D.pass close together
最新試題
Which statement concerning the operation of radar in fog is TRUE?（）
When using the ARPA in heavy rain，which action should you take? （）
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
Your radar is set on a true motion display.Which of the following will NOT appear to move across the PPI scope（）.
Your ARPA has automatic speed inputs from the log．Due to currents，the log is indicating a faster speed than the speed over the ground.What should you expect under these circumstances（）.
Which statement is true concerning a vessel equipped with operational radar?（）.
Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? （）
（）is not a job of the radar antenna.
What will cause the ARPA to emit a visual alarm，audible alarm，or both?（）
Your ARPA has been tracking a target and has generated the targets course and speed.The radar did not receive a target echo on its last two scans due to the weather.What should you expect under these circumstances（）.