客户一个单台服务器连接 5个SCSI 磁盘组成的Raid5，可用容量为 150GB，目前客户想增加磁盘的吞吐能力、可用性、可靠性等，成本是他们考虑的一个关键因素，下面哪个选项更适合这个需求？（） ["将现有磁盘的 RAID 5 转变成 RAID 1","将现有的磁盘存储改变成双 SCSI 连接","采用 DS5000 系列存储替换现在的存储","DS8000 系列存储替换现在的存储"]
继中国移动、中国联通、中国电信之后，谁有望成为第四大运营商？（） ["以参股方式进入基础电信运营市场的民资企业","以京东、小米为代表的虚拟运营商","中国广播电视网络有限公司","中国铁塔股份有限公司"]
While performing a site survey to document the existing environment before implementing a new HACMP cluster， it was discovered that a port filtering firewall was being used to protect the production system. The plan is to continue using the firewall and add a second firewall to avoid a single point of failure. Each node in the two-node cluster will have all of its network adapters connected to the firewalls， and all connections to the nodes will pass through these firewalls. What must be considered about HACMP in a firewall environment？（） [" Firewalls are not supported in a HACMP environment."," HACMP uses only TCP\/IP so firewalls are not relevant."," Specific ports must be open for HACMP communications."," Dynamic routing must be used to properly route packets in a firewall-protected environment."]
通过（）检验在役管线上焊接三通的焊缝。 ["超声波探伤","射线探伤","着色探伤","渗透探伤"]
液压油更换方法
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