单选题测者眼高为9m,物标高程为25m,则测者能见地平距离为()nmile。A6.27B10.45C16.72D17.67
单选题
测者眼高为9m,物标高程为25m,则测者能见地平距离为()nmile。
A
6.27
B
10.45
C
16.72
D
17.67
参考解析
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