A radar contact will remain stationary on a relative motion radar display only when it is（）.<br>A:on the same course as your vessel<br>B:at the same speed as your vessel<br>C:on the same course and speed as your vessel<br>D:on a reciprocal course at the same speed as your vessel

A radar contact will remain stationary on a relative motion radar display only when it is（）.
A:on the same course as your vessel
B:at the same speed as your vessel
C:on the same course and speed as your vessel
D:on a reciprocal course at the same speed as your vessel

出自：海船船员证

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