A.相等; B.二者正、負號相反; C.二者之和為1; D.二者之積為1
A.試樣未經(jīng)充分混勻; B.滴定管的讀數(shù)讀錯; C.滴定時有液滴濺出; D.砝碼未經(jīng)校正
A.CH3CH2CH2CH3; B.CH3CH2OCH2CH3; C.CH3CH2CH2CHO; D.CH3CH2CH2CH2OH