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
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
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