A.抽樣復(fù)驗 B.不許復(fù)驗 C.可復(fù)驗也可不復(fù)驗 D.全數(shù)復(fù)驗
A.0.40B.0.60C.0.55D.0.45
A.1/4 B.1/3 C.1/2 D.3/4