A.EBL
B.VRM
C.CRT
D.Grease pencil
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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.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
最新試題
The（）has a built-in world map; most areas are displayed on a scale of 4000 nm from the top to the bottom of the screen，and can be zoomed in to 150 nm.
Which statement about an estimated position is TRUE?（）
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（）.
Which general statement concerning radar is FALSE?（）.
You are scanning the radar screen for a buoy fitted with racon. How should this signal appear on the PPI display?（）
Which statement concerning the operation of radar in fog is TRUE?（）
The development of（）led to the fully automatic ARPA systems installed on commercial ships.
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? （）
Your radar is set on a true motion display.Which of the following will NOT appear to move across the PPI scope（）.
When using the radar for navigating（）.