单选题
此试题出现在
含碳为（）时，钢材的淬硬倾向逐渐明显。
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?（）
计划
梗阻性黄疸时（）
（）要求参加者事先准备一些问题，而且要掌握提问和聆听的时机。
十八届五中全会从“五位一体”的整体布局出发，把（）理念摆在突出位置，具有鲜明的时代特色和针对性，对纠正“唯GDP”式粗放型发展具有重大作用。
不具有透疹作用的药物是（ ）。
甲基橙酸度是用HCl溶液滴定到pH值为（）的酸度。
质心
举例说明多态。
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