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,1/3360 B.114.229m,1/67200 C.114.256m,1/3360 D.114.222m,1/67200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,1/3360 B.114.229m,1/67200 C.114.256m,1/3360 D.114.222m,1/67200正确答案A