Which of the following commands should be used to show the percentage of time that any given disk was busy？（） ps。 tprof。 iostat。 vmstat。
A customer has requested a proposal for a p5-520 with AIX 5.2 and Sysback. There are no plans to run LPARs or Micro-Partitions on the p5-520 in the near future. The customer has asked the pSeries technical specialist to recommend anything else that may be needed. Which of the following should be recommended in this situation？（） HMC。 DVD-ROM。 Tape drive。 Network switch。
判断远古城市产生的标志、城市产生的原因。
红细胞代谢所需能源主要来自（） 脂质。 葡萄糖代谢产生ATP。 蛋白质代谢。 Na↑<+>-K↑<+>泵。
A team of programmers is involved in reviewing a proposed design for a new utility class. After some discussion, they realize that the current design allows other classes to access methods in the utility class that should be accessible only to methods within the utility class itself. What design issue has the team discovered?（） Tight coupling。 Low cohesion。 High cohesion。 Loose coupling。 Weak encapsulation。 Strong encapsulatio。
以下原则中属于资产评估的经济原则的是（）。
