A.congesting
B.congested
C.congestion
D.congest
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A.detection
B.being detected
C.the detective
D.the detected
A.radar transponder beacon
B.radar conspicuous beacon
C.radar calibration beacon
D.circular radiobeacon
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
最新試題
You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.
Radar reflectors are required for（）.
Which statement is true concerning a vessel equipped with operational radar?（）.
You are using a radar in which your own ship is shown at the center，and the heading flash always points to 0°. If bearings are measured in relation to the flash，what type of bearings are produced? （）
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
You are scanning the radar screen for a buoy fitted with racon. How should this signal appear on the PPI display?（）
Which statement about an estimated position is TRUE?（）
Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? （）
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（）.
When using an ARPA，what should you consider in order to evaluate the information displayed?（）