In using Loran-C，skywave reception gives greater range but is（）.<br>A:only accurate during daylight hours<br>B:much less accurate<br>C:only accurate at twilight<br>D:more accurate than using ground waves

In using Loran-C，skywave reception gives greater range but is（）.
A:only accurate during daylight hours
B:much less accurate
C:only accurate at twilight
D:more accurate than using ground waves

出自：海船船员证

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