When using the ARPA in heavy rain，which action should you take? （）<br>A:Increase the radar gain to pick up weak echoes through the rain<br>B:Increase the STC setting to reduce close-in spurious signals<br>C:Navigate as though the effective range of the radar has been reduced<br>D:Increase the range of the inner and outer guard rings

When using the ARPA in heavy rain，which action should you take? （）
A:Increase the radar gain to pick up weak echoes through the rain
B:Increase the STC setting to reduce close-in spurious signals
C:Navigate as though the effective range of the radar has been reduced
D:Increase the range of the inner and outer guard rings

出自：海船船员证

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