A.質(zhì)量參數(shù) B.主要尺寸參數(shù) C.結構參數(shù) D.性能參數(shù)
A.5%~10% B.5%~15% C.15%~20% D.20%
A.綜合 B.經(jīng)濟 C.動力 D.負荷