A、望远镜
B、步话机
C、六分仪
D、舵机
A、A.error of perpendicularity B、B.side error C、C.prismatic error D、D.centering error
A、sextant B、compass C、radar D、binoculars
A、compass B、direction finder C、loran D、sextant
A、moon B、satellite C、sextant D、radar
A、binoculars B、mask C、sextant D、VHF
A、sextant B、binoculars C、compass D、loran
A、VHF set B、radar C、GPS D、sextant
A、VHF B、whistle C、broadcast D、sextant
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