A.尺長改正數(shù)為正 B.尺長改正數(shù)為負 C.尺長改正數(shù)為零 D.不計算尺長改正數(shù)
A.145.455m B.145.456m C.145.461m D.誤差超限
A.45.450m B.45.468m C.45.459m D.誤差超限