对某一边长观测四个测回,其结果分别为:123.041m.123.045m.123.040m.123.038m,则其观测值中误差为


对某一边长观测四个测回,其结果分别为:123.041m.123.045m.123.040m.123.038m,则其观测值中误差为

A.±0.01m

B.±0.002m

C.±0.003m

D.±0.004m

正确答案:C


Tag:边长 误差 时间:2023-11-15 16:17:03