我国现行的85高程基准的水准原点高程是()
A.72.289m
B.72.280m
C.72.560m
D.72.260m
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正确答案: D 答案分析:无
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D.72.260m
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D.72.260m
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C.72.560m
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B.72.280m
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D.72.260m