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
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A.Relative
B.TRUE
C.Compass
D.Magnetic
A.Your speed must be reduced to bare steerageway
B.A look-out is not required if the radar is on
C.Fog signals are only required when a vessel is detected by radar
D.The radar should always be kept on a short-range scale
A.stop your engines
B.sound two prolonged blasts of the whistle
C.sound the danger signal
D.slow to bare steerageway
A.Dead in the water
B.1 knot
C.10 knots
D.15 knots
A.Starting with a dash and extending radially outward from the target
B.As a broken line from center of PPI to the target
C.Starting with a dot and extending radially inward from the target
D.Starting with a dash and extending to the right of the target
最新試題
Your ARPA has two guard zones.What is the purpose of the inner guard zone（）.
When will the float-free emergency position indicating radiobeacon be activated after abandoning ship? （）
When using the radar for navigating（）.
When using an ARPA，what should you consider in order to evaluate the information displayed?（）
Which general statement concerning radar is FALSE?（）.
When you turn on the fast time constant (differentiator) control of a radar it will（）.
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
When hitting a solid object such as a ship or an airplane，the radar waves are reflected back （）they came.
You are scanning the radar screen for a buoy fitted with racon. How should this signal appear on the PPI display?（）
（）is not a job of the radar antenna.