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如图所示，用石墨电极电解氯化铜溶液。查阅资料可知，CuCl 4 2 — 显黄色，氯化铜溶液显蓝绿色或黄绿色；向体积相同浓度分别为0.01 mol/L、0.05 mol/L、0.1 mol/L、0.5 mol/L的氯化铜溶液中加入NaCl至饱和，对比发现，溶液的颜色由黄绿色向蓝绿色转变。 请回答下列问题： (1)阳极上的气体呈________色，检验该气体可用________________。 (2)写出电解的离子方程式：________________。 (3)实验时，装置中阴极溶液颜色由蓝绿色变为黄绿色，原因是________。 (4)取出阴极的石墨棒，发现表面有浅蓝色固体，试设计实验探究此浅蓝色固体的成分： ____________________________________________________。 (5)为什么要设计连接后面的装置？ ______________________________________________________________
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【多选题】人际交往有共性可循之“道”: ( )
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B.
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B.
热插拔是指不影响系统正常运转的情况下，用正常的硬盘物理替换RAID系统中失效硬盘
C.
热缓存是指处于运行状态的磁盘阵列子系统当出现单个物理盘失效的情况时，采用新硬盘将失效物理盘在线替换，同时保证系统稳定运行
D.
RAID0可以提供热缓存功能
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