机票的有效期及如何区别OK票和OPEN票？
信息化战体系总结
Following ticket consists of a problem description and existing configuration on the device. Figure 1 Figure 2 Trouble Ticket Statement Client 1 and Client 2 are getting a 169.x.x.x IP address and are not able to ping DSW1 or the FTP Server.They are able to ping each other. Configurationon ASW1 Interface FastEthernet1/0/1 switchport mode access switchport access vlan 1! Interface FastEthernet1/0/2 switchport mode access switchport access vlan 1 The Fault Condition is related to which technology？（） ["VLAN","InterVLAN communication","DHCP","Port Security"]
试述林下地被物在水土保持中的作用。
治疗泌尿道感染的药物有（） ["环丙沙星","氧氟沙星","洛美沙星","呋喃妥因","呋喃唑酮"]
何为生态位？生态位理论在农业上有什么意义和作用？
