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
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
（）typically extends from close as 0.1 nautical miles out to 32 NM.
When hitting a solid object such as a ship or an airplane，the radar waves are reflected back （）they came.
When navigating in thick fog with the radar on，you should（）.
Which statement is true concerning a vessel equipped with operational radar?（）.
Which statement about an estimated position is TRUE?（）
You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.
Your ARPA has two guard zones.What is the purpose of the inner guard zone（）.
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? （）
PPI is（）.