在使用查询设计器创建查询时,为了指定在查询结果中是否包含重复记录(对应于DISTINCT),应使用的选项卡是( )。
A、排序依据
B、连接
C、筛选
D、杂项
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系统中有R类资源m个,现有n个进程互斥使用。若每个进程对R资源的最大需求为w,那么当m、n、w取如表1-5所示的值时,对于表1-5中的a~e这5种情况,()可能会发生死锁。
A、a和b
B、b和c
C、c和d
D、c和e
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Which of the following is a best practice that can be used to ensure consistency when building systems?()
A、Server build checklist
B、Server baselining tools
C、Architecture diagrams
D、Hardware compatibility list
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What is the result?()
A、 1
B、 2
C、 12
D、 Compilation fails.
E、 No output is produced.
F、 An exception is thrown at runtime.
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对模板支撑架有哪些要求?
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When an administrator is troubleshooting a system, which of the following describes the NEXT course of action if a change does not solve the problem?()
A、 Establish a new theory of probable cause.
B、 Reverse the change.
C、 Implement the next logical change.
D、 Perform a root cause analysis.