系统管道验收时，公称直径为50mm的管道其支、吊架的最大间距为（）M。 ["2.4","2.7","3.0","3.4"]
系统思维的内容包括（） ["全局性思维","结构功能性思维","协同性思维","模式思维"]
In the design of a QoS solution， which two factors should be taken into consideration？（） [" On congested links， all forms of traffic will require some form of QoS."," All traffic types and requirements should be examined to determine the number of traffic classes required."," In the implementation of link efficiency mechanisms on links that typically transport relatively large packets， header compression will be most efficient."," In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， header compression will be most efficient."," In the implementation of link efficiency mechanisms on links that typically transport relatively small packets， payload compression will be most efficient."," Payload compression provides more available bandwidth and reduces processing delay time."]
从语气和结构角度分析句子。他跑得多么快呀！
企业通过对本企业和他人已采用的技术进行改进、完善，在原有的基础上创造出高质量、低成本的产品以控制和占领市场的一种专利技术研究开发战略是（） ["领先型战略","改进型战略","开创型战略","营销战略"]
试析《史记》对后世文学的影响。
