A.unwanted interference
B.unexpected figures
C.abnormal data
D.unwanted information
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A.SeaTalk
B.powerful microprocessors and mega memory capacity
C.chartplotter
D.small-scale chart
A.station the look-out in the wheelhouse to keep a continuous watch on the radar
B.secure the sounding of fog signals until a vessel closes within five miles
C.station a look-out as low down and far forward as possible
D.keep the radar on the shortest available range for early detection of approaching vessels
A.Dead in the water
B.1 knot
C.10 knots
D.15 knots
A.Relative
B.TRUE
C.Compass
D.Magnetic
A.Set and drift of the current
B.Relative track information
C.Predicted time of CPA
D.Initial range of acquisition
A.chartplotter
B.C-MAP NT
C.C-Cards
D.PPI
A.center bearings
B.tangent bearings
C.ranges
D.objects that are close aboard
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
A.the best fix is obtained by using a tangent bearing and a range
B.and using two radar ranges for a fix，the objects of the ranges should be close to reciprocal bearings
C.and using ranges，the most rapidly changing range should be measured last
D.and crossing a radar range of one object with the visual bearing of a second object，the two objects should be 80°to 110°apart
A.EBL
B.VRM
C.CRT
D.Grease pencil
最新試題
（）is not a job of the radar antenna.
Your radar is set on a true motion display.Which of the following will NOT appear to move across the PPI scope（）.
（）is not used in modern radar.
Which condition indicates that your radar needs maintenance?（）
When using a radar in a unstabilized mode，fixes are determined most easily from（）.
You are underway at 5 knots and see on your radar a contact 10 miles directly astern of you. 12 minutes later，the contact is 8 miles directly astern of you. What is the estimated speed of the contact? （）
What will cause the ARPA to emit a visual alarm，audible alarm，or both?（）
Which ARPA data should you use in order to determine if a close quarters situation will develop with a target vessel? （）
When will the float-free emergency position indicating radiobeacon be activated after abandoning ship? （）
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（）.