A.<1Ω B.<3Ω C.<5Ω D.<10Ω
A.机房市电线路的维护 B.机房室内外环境的维护 C.发电油机的保养 D.应急发电
A.display bgp community B.display bgp routing-tablecommunity C.display bgp peer D.display bgp routing-table peer X.X.X.X received-routes
A.6; B.8; C.10; D.12。
A.28-30 B.38-40 C.48-50 D.58-60