A.1000m,1根B.2000m,3根C.1000m,1%D.2000m,3%
A.外觀質(zhì)量檢查B.徑向剛度C.抗?jié)B漏性能D.以上說(shuō)法全檢驗(yàn)
A.2.5MPaB.5MPaC.10MPaD.15MPa