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单选题
A “full service” Loran-C receiver will provide（）.
A
matching pulse rates of at least 20 stations
B
an automatic on-and-off switch
C
a horizontal matching of all delayed hyperbolic signals
D
automatic signal acquisition and cycle matching
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单选题The correction to be applied to a Loran-C reading when matching a sky wave to a ground wave may be found（）.A
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