A.sensitivity time control (sea-clutter control)
B.receiver gain control
C.brilliance control
D.fast time constant (differentiator)
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A.congesting
B.congested
C.congestion
D.congest
A.detection
B.being detected
C.the detective
D.the detected
A.radar transponder beacon
B.radar conspicuous beacon
C.radar calibration beacon
D.circular radiobeacon
A.off／standby
B.standby／off
C.standby／close
D.close／standby
A.keeping a close watch and lookout
B.taking a radar range and bearing
C.observing a radar target and listening to signals
D.keeping a well clear caution
最新試題
You are using a radar in which your own ship is shown at the center，and the heading flash always points to 0°. If bearings are measured in relation to the flash，what type of bearings are produced? （）
When using the ARPA in heavy rain，which action should you take? （）
Your ARPA has two guard zones.What is the purpose of the inner guard zone（）.
Radar reflectors are required for（）.
（）is not a job of the radar antenna.
Which general statement concerning radar is FALSE?（）.
When will the float-free emergency position indicating radiobeacon be activated after abandoning ship? （）
Which statement concerning the operation of radar in fog is TRUE?（）
Your ARPA has been tracking a target and has generated the targets course and speed.The radar did not receive a target echo on its last two scans due to the weather.What should you expect under these circumstances（）.
What provides little or no indication that a vessel is dragging anchor? （）