题目内容

闭合导线当观测左角时，导线角度闭合差分配的原则是（）

A. 与角度闭合差同符号，按实际观测角度数平均分配角度闭合差
B. 与角度闭合差符号相反，按实际观测角度数平均分配角度闭合差
C. 与角度闭合差同符号，平均分配角度闭合差时，不考虑两个连接角
D. 与角度闭合差同符号，平均分配角度闭合差时，考虑两个连接角

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