A.根據(jù)實測溫度、氣壓從氣象改正圖表中查取B.根據(jù)實測溫度、氣壓按氣象改正公式計算C.由全站儀根據(jù)缺省數(shù)據(jù)自動計算D.由全站儀根據(jù)用戶輸入的實測溫度、氣壓自動計算
A.-1ppmB.零C.+1ppmD.±1ppm
A.0.01ppmB.0.1ppmC.0.5ppmD.1ppm