A.2%B.2.5%C.3%D.3.5%
A.Ⅰ類,質(zhì)量損失率≤5%B.Ⅰ類,質(zhì)量損失率≤8%C.Ⅱ類,質(zhì)量損失率≤8%D.Ⅲ類,質(zhì)量損失率≤10%
A.75μmB.1.18mmC.2.36mmD.4.75mm