对某角观测4测回,每测回的观测中误差为±8.5″,则其算术平均值中误差为( )。 -题库考试答案搜索网

对某角观测4测回,每测回的观测中误差为±8.5″,则其算术平均值中误差为( )。

单选题

2021-07-17 23:31

A、±2.1″
B、±1.0″
C、±4.2″
D、±8.5″

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正确答案

C

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标签：工程测量 2020年第二学期期末考试工程测量技术高起专工程测量学建筑工程技术 19级补考测绘工程专升本道路桥梁与渡河工程 2020年第二学期补考道路桥梁工程技术

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