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
PPI is（）.
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（）.
Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? （）
You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.
When using a radar in a unstabilized mode，fixes are determined most easily from（）.
Your radar displays your ship off center．As you proceed on your course， your ship’s marker moves on the PPI scope while echoes from land masses remain stationary.What is this display called（）.
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
When will the float-free emergency position indicating radiobeacon be activated after abandoning ship? （）
You are scanning the radar screen for a buoy fitted with racon. How should this signal appear on the PPI display?（）
Which statement is TRUE concerning a vessel equipped with operational radar?（）.