You have an Exchange Server 2010 Mailbox server.You need to ensure that deleted mailboxes are kept for 60 days.What should you do?()
A. Create a Retention Policy.
B. Create a managed folder mailbox policy.
C. Modify the properties of the mailbox database.
D. Modify the properties of the Mailbox server object.
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顺序执行PUSH EAX和POPEBX两条指令,其功能等同于()
A. MOV EAX, EBX
B. MOV EBX, EAX
C. XCHG EAX, EBX
D. XCHG EBX, EAX
美国的标准普尔500种综合股票指数、纽约期货交易所综合指数和价值线综合平均指数,这三种指数期货合同的金额都是以指数乘以()
A. 100美元
B. 250美元
C. 500美元
D. 600美元