In order to ensure that a RACON signal is displayed on the radar，you should（）.<br>A:increase the brilliance of the PPI scope<br>B:turn off the interference controls on the radar<br>C:use the maximum available range setting<br>D:increase the radar signal output

In order to ensure that a RACON signal is displayed on the radar，you should（）.
A:increase the brilliance of the PPI scope
B:turn off the interference controls on the radar
C:use the maximum available range setting
D:increase the radar signal output

出自：海船船员证

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