单项选择题
A.true bearing of the transmitter B.relative bearing of the transmitter C.heading of the vessel D.time of reception
A.varies depending upon the bearing used B.is the angular difference between magnetic north and compass north C.is published on the compass rose on most nautical charts D.is the angular difference between geographic and magnetic meridians
A.RINGS INT B.SWEEP INT C.REPEATER D.GONIOMETER