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除去叶片的加工和装配要符合设计的要求外，压气机的设计要满足（）。（1）足够的刚度（2）足够的强度（3）重量轻（4）结构简单

A. （1）（2）（3）
B. （1）（3）（4）
C. （2）（3）（4）
D. （1）（2）（3）（4）

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患者男，58岁。突然头痛呕吐，伴意识丧失30分钟。查体神志清楚，颈部抵抗，克氏征阳性。右侧眼睑下垂，右侧瞳孔4mm，光反射消失。此时最好的诊断措施是（）。

A. 腰椎穿刺
B. 脑电图
C. 视力检查
D. 头颅CT
E. 视神经成像

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A customer has a new p5-550 running AIX 5.2 that is SAN-attached to a FAStT900. They have encountered hangs lasting over a minute on their new system during application load testing. They called the pSeries technical specialist for advice. Which of the following would be the most appropriate questions to determine their next step in resolving the problem？（）

Are there any errors in the error log？ Do they indicate any hardware or software errors？
B. Has performance data been collected？ What do the results show in terms of I/O statistics？
C. Has performance data been collected？ What do the results show in terms of CPU utilization？
D. What type of SAN switch is the customer using？ What are the microcode levels on the switch？

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