A、A.on the same course as your vessel
B、B.at the same speed as your vessel
C、C.on the same course and speed as your vessel
D、D.on a reciprocal course at the same speed as your vessel
更多“A radar contact will remain stationary on a relative motion radar display only when it is（）.”相关的问题
A、immediately when the contact is noted on radar B、only if the radar scope is watched constantly C、after the contact has been marked at least twice D、by an occasional glance at the radar
A、Radar ranges are less accurate in fog B、Navigation buoys will always show up on radar C、A sandy beach will show up clearer on radar than a rocky cliff D、Small wooden boats may not show up on radar
A、It will respond only to interrogation by 9-Ghz radar signals B、A SART will normally respond to interrogation from a searching vessel's radar if the radar antenna is at least 15 meters high C、A SART will normally respond to interrogation from a searching aircraft's radar if the radar's output power is at least 10，000 watts and the aircraft is at a height of 3000 feet and within 30 nautical miles D、All of the above
A、You should make an ample change to port for a vessel crossing on the starboard bow B、You should maneuver in ample time if a close-quarters situation is developing C、You should determine the course and speed of all radar contacts at six minute intervals D、Long-range scanning will provide early warning of ALL other vessels within the radar's range
A、you should make an ample change to port for a vessel crossing on the starboard bow B、You should maneuver in ample time if a close-quarters situation is developing C、You should determine the course and speed of all radar contacts at six minutes intervals D、Long-range scanning will provide early warning of all other vessels within the radar’s range
A、Their bearing is almost constant，even when the true bearing of the contact changes appreciably B、They always appear on a bearing of 90°from the true bearing of the contact C、The indirect echoes usually appear in shadow sectors D、When plotted，their movements are usually abnormal
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