An AIX system， which is running a database， is having performance issues with I/O writing. The DBA has provided numbers for the HIGH and LOW watermarks for pending file writes， which will optimize the system for best performance. To set these numbers， which of the following commands would be used？（） perfmon -h 30 -l 25。 chdev。 no -o。 smit chgsy。
纤维蛋白降解产物不包括（） 碎片D。 碎片C。 碎片E。 碎片Y。
下列关于美国心理学家梅杰（Mager，1975）的行为目标的陈述中行为的标准描述哪一项是错误的。（） 行为的标准指用来评价学生学习成果的标准。 行为的标准指学生达到什么程度是可以接受的。 “10题中能够解对9题”。 能够写一篇文章。
杆件变形的基本形式有（）。 流体是液体和气体的总称。 流体是由大量的、不断地作热运动而且无固定平衡位置的分子构成的。 流体都有一定的可压缩性，液体可压缩性大，而气体的可压缩性较小。 在流体的形状改变时，流体各层之间存在一定粘滞性。 当流体的粘滞性和可压缩性很小时，可近似看作是理想流体。
Which of the following statements best describes the relationship between a logical volume and a journaled file system (JFS)?（） Increasing the size of a logical volume also increases the size of the file system。 Reducing the size of a logical volume requires reducing the size of the file system first。 Increasing the size of a file system requires increasing the size of the logical volume first。 Increasing the size of a file system also increases the size of the logical volume when necessary。
A user with the userid of ’joe’ is unable to rsh from SYSTEMA to SYSTEMB without having to retype their password， but they can rsh from SYSTEMB to SYSTEMA. No other users are experiencing the same issue.Both systems have a /home/joe/.rhosts file that contain the proper references to the other host. The /home/joe/.rhosts files on both SYSTEMA and SYSTEMB are owned by userid ’joe’. Which of the following is the most likely cause of this problem？（）
