You work as a database administrator for Supportcenter.cn. In a production environment， users complain about the slow response time when accessing the database. You have not optimized the memory usage of the Oracle instance and you suspect the problem to be with the memory. To which type of object would you refer to determine the cause of the slow response？（）
A. The trace file
B. The fixed views
C. The data dictionary views
D. The operating system log fields
E. The dynamic performance views.
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假远期信用证实际上是开证行给受益人的一种融资
A. 正确
B. 错误
What feature does the Partner E-Learning Connection provide?（）
A. Lists of training-partner class offerings.
B. Hosted website that partners use to deliver e-learning to customers.
C. Full versions of all Cisco technical-level classes.
D. Flexibility, web-based knowledge and learning.
E. Live instructor-led, web-based classes.
表示计算机存储器的容量，使用的单位有：KB、MB、GB等。
A. 正确
B. 错误
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