A.未經(jīng)充分混勻 B.滴定管的讀數(shù)讀錯(cuò) C.滴定時(shí)有液滴濺出 D.砝碼未經(jīng)校正
A、0.0002g B、0.001g C、0.002g D、0.02g
A、±0.1% B、+0.1% C、-0.1% D、無法確定