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.in dense fog
B.in boisterous weather
C.in the open sea
D.in rivers
A.incorrect image
B.distinctive image
C.pictorial image
D.pictographic image
A.with
B.to
C.for
D.of
A.should not be made
B.are not to be taken
C.should be taken
D.shall be made
A.used
B.available
C.in use
D.can be used
最新試題
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.
Which statement is TRUE concerning a vessel equipped with operational radar?（）.
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 ARPA has automatic speed inputs from the log．Due to currents，the log is indicating a faster speed than the speed over the ground.What should you expect under these circumstances（）.
Which general statement concerning radar is FALSE?（）.
You are underway in thick fog. You have not determined if risk of collision exists. Which statement is TRUE?（）.
（）is not used in modern radar.
When using the radar for navigating（）.
Your radar displays your ship off center．As you proceed on your course， your ship’s marker moves on the PPI scope while echoes from land masses remain stationary.What is this display called（）.