A.the radar reflectors reflect better signals
B.fog horn signals travel farther to sea
C.it is equipped with strobe lights
D.it has a reduced watch circle
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A.are tracked on reciprocal bearings
B.are tracked at the same range
C.are tracked on the same bearing
D.pass close together
A.give better range performance in rain，hail，etc
B.display small targets in a mass of dense sea clutter at a greater range
C.have less sea return in choppy rough seas
D.display a more map like presentation for inshore navigation
A.be more suitable for river and harbor navigation
B.provide better range performance on low lying targets during good weather and calm seas
C.have a wider horizontal beam width
D.have more sea return during rough sea conditions
A.sweep introduction
B.sweep interest
C.sweep intention
D.sweep intensity
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
最新試題
Which procedure(s) shall be used to determine risk of collision? （）
（）typically extends from close as 0.1 nautical miles out to 32 NM.
What provides little or no indication that a vessel is dragging anchor? （）
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
When navigating in thick fog with the radar on，you should（）.
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（）.
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?（）.
When hitting a solid object such as a ship or an airplane，the radar waves are reflected back （）they came.