用钢尺两次测量某一长度值分别为114.256m和114.222m,则测量值和精度为()。
A.114.239m,1/3350 B.114.239m,1/67200 C.114.222m,1/3350 D.114.256m,1/67100正确答案A
用钢尺两次测量某一长度值分别为114.256m和114.222m,则测量值和精度为()。
A.114.239m,1/3350 B.114.239m,1/67200 C.114.222m,1/3350 D.114.256m,1/67100正确答案A