Registered Surveyor Practice Questions - China Registered Surveyor And Mapping Engineer Qualification Examination (全国注册测绘师职业资格考试) Exam

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What is the official origin elevation and baseline tide gauge location for the 1985 National Elevation Datum (1985国家高程基准) in China?

72.260 m above mean sea level determined at the Qingdao Daguan Tide Gauge (1952–1979 observations) 72.289 m above mean sea level determined at the Qingdao Daguan Tide Gauge (1950–1956 observations) 70.000 m above mean sea level determined at the Shanghai Wusong Tide Gauge 75.500 m above mean sea level determined at the Tianjin Dagukou Tide Gauge

Correct Answer:

72.260 m above mean sea level determined at the Qingdao Daguan Tide Gauge (1952–1979 observations)

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