五大功能区域划分之后,()和城市发展新区是未来人口转移的主力中心。
Which two of these are characteristics of the 802.1Q protocol?() it is a layer 2 messaging protocol which maintains vlan configurations across network.。 it includes an 8-bit field which specifies the priority of a frame.。 it is used exclusively for tagging vlan frames and dose not address network reconvergence following switched network topology changes.。 it modifies the 802.3 frame header,and thus requires that the FCS be recomputed.。 it is a trunking protocol capable of carring untagged frames.。
烧结矿的碱度是2.1,属于()烧结矿。 非自熔性。 自熔性。 高碱度。
塔式起重机标准节联结螺栓主要采取()防松措施 机械防松。 双帽防松。 预紧力矩防松。 弹簧垫片防松。
What is the under lying cause of this problem?() A remote physical layer problem exists.。 The host NIC is not functioning.。 TCP/IP has not been correctly installed on the host.。 A local physical layer problem exists.。
国务院2006年发布的《国家中长期科学和技术发展规划纲要(2006-2020年)》,确立了我国的科技创新指标,到2020年()。