单项选择题
设A点高程为35.032m,B点高程为34.729m,则AB的点高差为多少米?()
A.-29.761
B.-0.303
C.0.303
D.29.761
点击查看答案&解析

单项选择题
A.-29.761
B.-0.303
C.0.303
D.29.761
微信扫一扫,加关注免费搜题