A.GB/T1250-2008 B.GB/T8170-2008 C.GB/T15481-2008 D.GB/T6682-2008
A.乙醇的質(zhì)量分?jǐn)?shù)為95% B.乙醇的體積分?jǐn)?shù)為95% C.乙醇的質(zhì)量百分濃度為95% D.乙醇的質(zhì)量分?jǐn)?shù)為5%
A.697.5nm B.530nm C.630nm D.425nm