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用视距法测量地面AB两点之间的水平距离,需要观测的数据是()。

多选题
2021-07-17 23:26
A、上丝读数
B、下丝读数
C、中丝读数
D、仪器高
E、竖盘读数
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正确答案
ABE

试题解析

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