A.水準(zhǔn)管軸平行于視準(zhǔn)軸 B.視準(zhǔn)軸垂直于豎軸 C.視準(zhǔn)軸垂直于圓水準(zhǔn)軸 D.豎軸平行于圓水準(zhǔn)軸
A.0.5m B.0.2m C.0.3m D.1m
A.5m B.3m C.1m D.10m