十进制168转换为8进制结果是（）。 （247）8。 （249）8。 （250）8。 （251）8。
球面带的表面积为（）π乘以球面带的圆弧内半径再乘以球面带高度。 3。 2。 1/2。 1/3。
政府对包括产学研在内的创新系统进行整体协调和集成的主要方式是（） 发展科技金融。 推动科技创新与金融创新的融合。 提升企业自主创新能力。 建立大学科技园。 搭建产学研合作创新平台。
国家（）用人单位根据本单位实际情况为劳动者建立补充保险。 规定。 鼓励。 强制。 支持。
You are a professional level SQL Sever 2008 Database Administrator in an international corporation named Wiikigo. You are experienced in managing databases in an enterprise-level organization, optimizing and sustaining the database life cycle. In the company, your job is to implement solutions on security, troubleshooting, deployment and optimization. SQL Server 2008 instances at five sites are managed by you.A mission-critical database is shared by the five sites. According to the business requirements, the users at each site should be enabled to access and change data on all sites with minimal latency.In addition, data loss should be minimized if a server fails. A high-availability solution should be designed, and the business requirements should be satisfied. Which action should be included in your solution?（） Failover clustering should be included. 。 Asynchronous database mirroring without a witness server should be included.。 Peer-to-Peer replication should be included. 。 Log shipping to servers at two of the sites to offer read-only replications of data should be included.。
以下不是履约担保常用的担保形式的是（）
