准备工作
A client wants to implement a highly available cluster between two sites. At each site the client has an IBMDS8300. At each site， the client would like a single node which will be connected through a SAN to the local DS8300but not the remote DS8300. Which clustering product could be used to provide high availability for this infrastructure？（） ["PowerHA\/XD for GLVM","PowerHA with cross-site LVM","PowerHA\/XD for Metro Mirror","PowerHA\/XD for Global Mirror"]
所谓房地产的合法权益是指房地产的（）。 ["产权合法","使用合法","处分合法","收益合法"]
Which constraint can be defines only at the column level? （） [" UNIQUE"," NOT NULL"," CHECK"," PRIMARY KEY"," FOREIGN KEY"]
引发二战后资本主义世界最严重的一次经济危机的直接导火线是（）。 ["资本主义社会基本矛盾激化","国家垄断资本主义的作用减弱","中东国家大幅提高石油价格","美、日、西欧三足鼎立局面的形成"]
心理眩光
