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
PPI is（）.
You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?（）.
What provides little or no indication that a vessel is dragging anchor? （）
When hitting a solid object such as a ship or an airplane，the radar waves are reflected back （）they came.
Which statement concerning the operation of radar in fog is TRUE?（）
Which statement is TRUE concerning a vessel equipped with operational radar?（）.
Which procedure(s) shall be used to determine risk of collision? （）
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 radar is set on a true motion display.Which of the following will NOT appear to move across the PPI scope（）.
When using an ARPA，what should you consider in order to evaluate the information displayed?（）