A.should not be made
B.are not to be taken
C.should be taken
D.shall be made
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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
When using an ARPA，what should you consider in order to evaluate the information displayed?（）
When navigating in thick fog with the radar on，you should（）.
Which statement concerning the operation of radar in fog is TRUE?（）
Which general statement concerning radar is FALSE?（）.
（）is not a job of the radar antenna.
When you turn on the fast time constant (differentiator) control of a radar it will（）.
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? （）
Radar reflectors are required for（）.
（）typically extends from close as 0.1 nautical miles out to 32 NM.
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.