A.0 B.1% C.2% D.3%
A.0.2S,2.0,0.2,0.2S B.0.2,2.0,0.2,0.2 C.0.5S,2.0,0.2,0.5S D.0.5,2.0,0.2,0.5。
A.調(diào)前誤差 B.調(diào)后誤差 C.化整后 D.平均誤差。