单项选择题
When using the ARPA in heavy rain，which action should you take? （）
A.Increase the radar gain to pick up weak echoes through the rain
B.Increase the STC setting to reduce close-in spurious signals
C.Navigate as though the effective range of the radar has been reduced
D.Increase the range of the inner and outer guard rings
相关考题
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单项选择题
When using an ARPA，what should you consider in order to evaluate the information displayed?（）
A.The target vessel's generated course and speed are based solely on radar inputs
B.Navigational constraints may require a target vessel to change course
C.The trial maneuver feature will automatically determine a course that will clear all targets
D.You cannot determine if a small target has been lost due to sea return -
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 -
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
