A.5%~10% B.2%~5% C.1%~2% D.4%~5%
A.20%~30% B.30%~40% C.40%~50% D.45%~50%
A.軌道式量規(guī)、定心量規(guī) B.三維測量系統(tǒng) C.鋼卷尺 D.直尺