二次监视雷达解释正确的是 A: second surveillance radar B: secondary surveillance radar C: primary surveillance radar D: precision approach radar
二次监视雷达解释正确的是 A: second surveillance radar B: secondary surveillance radar C: primary surveillance radar D: precision approach radar
“Radar” is an example of acronym.
“Radar” is an example of acronym.
Radar is better than GPS.
Radar is better than GPS.
Radar、DNA都是首字母拼读词。
Radar、DNA都是首字母拼读词。
4. Radar makes the most accurate determination of the ___ ___.
4. Radar makes the most accurate determination of the ___ ___.
Radar is an example of acronym. A: True B: False
Radar is an example of acronym. A: True B: False
Radar makes it possible and much safer for us to sail __.
Radar makes it possible and much safer for us to sail __.
45. A navigator fixing a vessel's position by radar ______.
45. A navigator fixing a vessel's position by radar ______.
Radar identified, omit position reports until ZF.
Radar identified, omit position reports until ZF.
RADAR上出现同芯弧信号，说明SART与RADAR相距：（） A: 100-200米 B: 300-500米 C: 1海里以上 D: 500米-1海里
RADAR上出现同芯弧信号，说明SART与RADAR相距：（） A: 100-200米 B: 300-500米 C: 1海里以上 D: 500米-1海里