A、brightness of obtain
B、color of targets
C、shape of targets
D、bearing of objects
更多“Radar is not only to obtain（）,but also to measure their distance away from you.”相关的问题
A、Your speed must be reduced to bare steerageway B、A look-out is not required if the radar is on C、Fog signals are only required when a vessel is detected by radar D、The radar should always be kept on a short-range scale
A、Your speed must be reduced to bare steerage ways B、A look-out is not required if the radar is on C、The radar should always be kept on a short-range scale D、Fog signals are only required when a vessel is detected by radar
A、Only a radar expert can determine if the radar is operating B、All radars have indicator lights and alarms to signal improper operation C、A radar range compared to the actual range of a known object can be used to check the operation of the radar D、The radar resolution detector must be energized to check the radar
A、at obscured objects B、forward submerged targets C、up exposed targets D、for unseen objects
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、The Master of the vessel must be on the bridge when the radar is in use B、The radar equipment is only required to be used in restricted visibility C、The use of a radar excuses a vessel from the need of a look-out D、This equipment must be used to obtain early warning of risk of collision
A、Raising the antenna height increases the radar range B、The ability of radar to detect objects is unaffected by weather conditions C、Radar bearings are less accurate than radar ranges D、Radar should be checked regularly during clear weather to ensure that it is operating properly
A、A.She must use this equipment to obtain early warning of risk of collision B、B.The use of a radar excuses a vessel from the need of a look-out C、C.The radar equipment is only required to be used in restricted visibility D、D.The safe speed of such a vessel will likely be greater than that of vessels without radar
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