当前学科:基础知识
  • 题目: 单选题
    M点高程Hm=43.251m,测得后视读数a=1.000m,前视读数b=2.283m。则N点对M点的高差hMN和待求点N的高程HN分别为:()

      A1.283m,44.534m

      B-3.283m,39.968m

      C3.283m,46.534m

      D-1.283m,41.968m

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