A.incorrect image
B.distinctive image
C.pictorial image
D.pictographic image
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A.with
B.to
C.for
D.of
A.should not be made
B.are not to be taken
C.should be taken
D.shall be made
A.used
B.available
C.in use
D.can be used
A.unwanted interference
B.unexpected figures
C.abnormal data
D.unwanted information
最新試題
Which statement is true concerning a vessel equipped with operational radar?（）.
Which condition indicates that your radar needs maintenance?（）
Which procedure(s) shall be used to determine risk of collision? （）
You are scanning the radar screen for a buoy fitted with racon. How should this signal appear on the PPI display?（）
When using the ARPA in heavy rain，which action should you take? （）
When you turn on the fast time constant (differentiator) control of a radar it will（）.
When navigating in thick fog with the radar on，you should（）.
When using an ARPA，what should you consider in order to evaluate the information displayed?（）
Radar reflectors are required for（）.
（）typically extends from close as 0.1 nautical miles out to 32 NM.