最经常地被用来识别风险的技术是：（）

A、面谈

B、DELPHI技术

C、图表

D、头脑风暴

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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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• What is the result？（）

  A、 Compilation fails.

  B、 An exception is thrown at runtime.

  C、 The variable first is set to null.

  D、 The variable first is set to elements[0].

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• 在WAR文件中，web.xml放在哪个目录中（）

  A、 WEB-INF

  B、 APP-INF

  C、 META-INF

  D、 WEB-INF/lib

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• 太极图形是在我国（）时期创造出来的。

  A、新石器

  B、商周

  C、战国

  D、汉朝

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• Mary has a view called EMP_DEPT_LOC_VU that was created based on the EMPLOYEES, DEPARTMENTS, and LOCATIONS tables. She granted SELECT privilege to Scott on this view. Which option enables Scott to eliminate the need to qualify the view with the name MARY .EMP_DEP_LOC_VU each time the view is referenced?（）

  A、Scott can create a synonym for the EMP_DEPT_LOC_VU bus using the command: CREATE PRIVATE SYNONYM EDL_VU FOR mary.EMP DEPT_LOC_VU; then he can prefix the columns with this synonymn.

  B、Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE SYNONYM EDL_VU FOR mary.EMP_DEPT_LOC_VU; then he can prefix the columns with this synonym.

  C、Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE LOCAL SYNONYM EDL_VU FOR mary.EMP DEPT_LOC_VU; then he can prefix the columns with this synonym.

  D、Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command: CREATE SYNONYM EDL_VU ON mary(EMP_DEPT_LOC_VU); then he can prefix the columns with this synonym.

  E、Scott cannot create a synonym because synonyms can be created only for tables.

  F、Scott cannot create any synonym for Mary's view. Mary should create a private synonym for the view and grant SELECT privilege on that synonym to Scott.

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