下列属于抗氧化剂的有：（）。 维生素A。 β-胡萝卜素。 类胡萝卜素。 维生素。
A System p administrator has created a customized security profile using AIX Security Expert. Which of the following commands will apply this to a system（） aixpert -f mysec.xml。 aixpert -a mysec.xml。 chsec -f mysec.xml。 chsec -a mysec.xml。
A system must be evaluated and tuned. In order to use a set of performance evaluation programs （e.g. filemon， svmon， and tprof）， which of the following packages should exist on the system？（） bos.rte.control （WLM）。 bos.perf。 xlC.rte。 perfagent.tool。
自然环境对教育有（） 基础性影响作用。 间接影响作用。 既有直接影响作用，也有间接影响作用。 直接影响作用。
A customer is evaluating the purchase of a new p570 8-way Express to replace their current set of ten 2-way database and application servers that are more than five years old. In addition to savings potential in the areas of operating system and database charges， what other significant savings component should be highlighted？（） Maintenance savings due to warranty on new machines。 Reliability savings of using one machine versus ten。 Financial savings due to cash outlays now versus later。 Power savings even if the current power usage is unknow。
Given:
What is the result?（）
