A.unwanted interference
B.unexpected figures
C.abnormal data
D.unwanted information
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A.Watching the compass bearing of an approaching vessel
B.Systematic observation of objects detected by radar
C.Long-range radar scanning
D.All of the above
A.EBL
B.VRM
C.CRT
D.Grease pencil
A.in the way
B.the way
C.by the way
D.through the path
A.To receive the high-frequency pulses from the transmitter
B.To focus the pulses into a beam，and send them into space
C.To pick up reflected pulses coming from objects that have been struck by the beam
D.To reflect microwaves
A.Dead in the water
B.1 knot
C.10 knots
D.15 knots
A.the best fix is obtained by using a tangent bearing and a range
B.and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings
C.and using ranges，the most rapidly changing range should be measured last
D.and crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart
A.stop your engines
B.sound two prolonged blasts of the whistle
C.sound the danger signal
D.slow to bare steerageway
A.Off center
B.True motion
C.Stabilized
D.Head up
A.all fishing vessels over 39 feet in length
B.sail-propelled fishing vessels
C.all fishing vessels of less than 200 GT
D.wooden hull fishing vessels with a poor radar echo
A.a plan-position indicator system
B.pulse-plan integration
C.pulse-pulse input
D.power-plan input
最新試題
（）typically extends from close as 0.1 nautical miles out to 32 NM.
What provides little or no indication that a vessel is dragging anchor? （）
When using an ARPA，what should you consider in order to evaluate the information displayed?（）
Which general statement concerning radar is FALSE?（）.
Which statement is true concerning a vessel equipped with operational radar?（）.
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
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（）.
Your ARPA has two guard zones.What is the purpose of the inner guard zone（）.
You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?（）.
Which statement about an estimated position is TRUE?（）