单项选择题
When using a radar in a unstabilized mode，fixes are determined most easily from（）.
A.center bearings
B.tangent bearings
C.ranges
D.objects that are close aboard
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相关考题
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单项选择题
When navigating in thick fog with the radar on，you should（）.
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 -
单项选择题
When hitting a solid object such as a ship or an airplane，the radar waves are reflected back （）they came.
A.in the way
B.the way
C.by the way
D.through the path -
单项选择题
What will cause the ARPA to emit a visual alarm，audible alarm，or both?（）
A.An acquired target entering into a guard zone
B.A tracked target lost for one radar scan
C.A tracked target entering your preset CPA-TCPA limits
D.A target being initially detected within a guard zone
