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
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A.a plan-position indicator system
B.pulse-plan integration
C.pulse-pulse input
D.power-plan input
A.one target
B.two targets
C.three targets
D.a large number of targets
A.EBL
B.VRM
C.CRT
D.target tracking range
A.EBL
B.VRM
C.CRT
D.Grease pencil
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
最新試題
Which general statement concerning radar is FALSE?（）.
Which statement concerning the operation of radar in fog is TRUE?（）
Which statement is TRUE concerning a vessel equipped with operational radar?（）.
What will cause the ARPA to emit a visual alarm，audible alarm，or both?（）
Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? （）
PPI is（）.
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 underway at 5 knots and see on your radar a contact 10 miles directly astern of you. 12 minutes later，the contact is 8 miles directly astern of you. What is the estimated speed of the contact? （）
When using an ARPA，what should you consider in order to evaluate the information displayed?（）