夏是我国最早的奴隶制国家之一，当时的税收主要采取了（）这种低级形式。 ["捐","贡","助","彻"]
Which Cisco CRS 4.0 server configuration task enables the Cisco CRS server to fail over to a secondary Cisco Unified CallManager when the primary Cisco Unified CallManager fails?（） ["The LDAP directory must have a secondary profile configured. ","No special configuration is required. Cisco Unified CallManager maintains the failover. ","The JTAPI provider on the Cisco CRS server must be configured with the secondary Cisco Unified CallManager IP address following the primary Cisco Unified CallManager IP address. ","There must be a second JTAPI user configured with an alternate range of CTI ports."]
轮虫
根据供油系统分类
南水北调工程沿线（）省市设立了南水北调工程建设领导机构及办事机构。 ["5","6","7","8"]
BRT（快速公交系统）在道路上运营模式可以分为哪三个层次
