请简述Switch变流系统中,变流器发电机侧空开闭合测试步骤
某用户希望增加一个备份存储池在现有的DS5000存储系统上，那种磁盘提供了最好的选择：（） ["SATA","SAS","Fibre Channel","SCSI"]
在小学课堂教学中，教师对于表现优秀的小组给予小花红奖励。这种教学效应最适合的心理学解释理论（） ["强化说","认知失调论","从众说","观察学习理论"]
GK型三通阀701型试验台紧急制动试验中，制动缸压力不得小于（）。 ["450kPa","380kPa","270kPa","140kPa"]
A company has a 30 TB multi-vendor storage environment attached to System i and open systems. They are concerned about the time and effort caused by frequent migrations to new storage hardware for open systems data. In addition to consolidating their storage to a single platform， they would like to take advantage of advanced features such as Easy Tier and implement a three-site business continuity strategy. Which product provides the best long-term solution for this company（） ["IBM System Storage DS8000","IBM XIV Storage System","IBM System Storage N series","IBMStorwize V7000"]
在Excel“格式”工具栏中提供了几种对齐方式：（）
