A.23.50N,1600E | B.23.50S,1600E | C.23.50N,200W | D.23.50S,200W |
A.西北;东南 | B.东北;西南 |
C.西北;东北 | D.西南;西北 |
A.原点 | B.②点的正东方 |
C.②点的正西方 | D.②点的正南方 |
A.先向西北,再向西南 | B.一路向正南 |
C.先向东南,再向东北 | D.一路向正北 |
A.30°N,60°W | B.30°S,60°W |
C.30°N,60°E | D.30°S,60°E |
A.23.50N,1600E | B.23.50S,1600E | C.23.50N,200W | D.23.50S,200W |
A.东北方 | B.西南方 | C.东南方 | D.西北方 |
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