A.R3COH>R2CHOHB.R2CHOH>RCH2OHC.RCH2OH>R3COHD.R3CHOH>RCH2OH
A.氯乙烷B.碘甲烷C.溴乙烷D.乙烷
A.精度B.不確定度C.準(zhǔn)確度D.可比性