To obtain accuracy in fixing by DF，（）and three stations should be used.<br>A:parallel bearings<br>B:long-range bearings<br>C:short-range bearings<br>D:cross bearings

To obtain accuracy in fixing by DF，（）and three stations should be used.
A:parallel bearings
B:long-range bearings
C:short-range bearings
D:cross bearings

出自：海船船员证

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