A.軟件故障 B.壓力傳感器故障 C.數(shù)據(jù)線周圍有干擾源 D.專用數(shù)據(jù)處理儀故障
A.50° B.60° C.75° D.150°
A.0°±0° B.1°±1° C.2°±1° D.4°±1°