题目内容

某厂2007年#1机组（100MW）“五一”期间进行节日检修42小时。修后运行10小时后，发现再热器汽汽交换器空气管管座焊口有泄漏。停机组进行缺陷处理48小时。#2机组（200MW）9月份进行了C级检修14天，“十一”期间按照调度命令停运30小时。其余全出力运行。该厂全年不可用系数是（）。

A. 2.90%
B. 3.01%
C. 3.11%
D. 3.52%

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In a single-tier environment running WebSphere Commerce V5.6 Professional Edition， traffic has increased significantly over the last month. It has been determined that load has increased throughout the system. Which is the BEST change to provide the largest increase in performance？（）

A. Upgrade to WebSphere Commerce V5.6 Business Edition
B. Create a two-tier environment by moving the database server to a new node
Create a demilitarized zone （DMZ） between two firewalls
D. Compile all the store JPSs
E. Disable all caching of JSP

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