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

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热门试题

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

单项选择题

What provides little or no indication that a vessel is dragging anchor? （）

A.Increasing radar range to a fixed object ahead
B.Drift lead with the line leading perpendicular to the centerline
C.Vibrations felt by placing a hand on the cable
D.Changing bearings to distant fixed objects abeam