A.with
B.to
C.for
D.of
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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
Although manual plotting for CPA works well，the workload can become overwhelming when confronted with（）.
When using the ARPA in heavy rain，which action should you take? （）
When hitting a solid object such as a ship or an airplane，the radar waves are reflected back （）they came.
The（）has a built-in world map; most areas are displayed on a scale of 4000 nm from the top to the bottom of the screen，and can be zoomed in to 150 nm.
The development of（）led to the fully automatic ARPA systems installed on commercial ships.
Which procedure(s) shall be used to determine risk of collision? （）
Which statement about an estimated position is TRUE?（）
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? （）
（）is not used in modern radar.
Which statement concerning the operation of radar in fog is TRUE?（）