Servlet A receives a request that it forwards to servlet B within another web application in the same web container. Servlet A needs to share data with servlet B and that data must not be visible to other servlets in A’s web application. In which object can the data that A shares with B be stored？（） [" HttpSession"," ServletConfig"," ServletContext"," HttpServletRequest"," HttpServletResponse"]
You have two servers named Server1 and Server 2 that run Windows Server 2003 Service Pack 2 (SP2). Server1 is a file server. Server2 is a DNS server. The relevant portion of the network is configured as shown in the exhibit. (Click the Exhibit button.) On Server1 you run the Nslookup command and receive the following error message: DNS request timed out. timeout was 2 seconds. You need to ensure that Server1 can contact Server2 and query DNS records. What should you do? （） ["On Server2， change the IP address to 172.16.26.200.","On Server2， change the default gateway to 172.16.7.254.","On Server1， change the DNS server address to 127.0.0.1.","On Server1， change the DNS server address to 172.16.14.200."]
关于建筑幕墙的防雷构造要求的说法，正确的有（） ["幕墙的金属框架应与主体结构的防雷体系可靠连接","避雷接地一般每三层与均压环连接","兼有防雷功能的幕墙压顶板宜采用厚度不小于2mm的铝合金板制造","在有镀膜层的构件上进行防雷连接，应除去其镀膜层","使用不同材料的防雷连接应避免产生双金属腐蚀"]
Mu20的砖经试验检验抗折强度不符合要求，应该（） ["降一级使用","降二级使用","提高一级使用","可按原级使用"]
（）能让计算机运行速度大大提高，但处理时间漫长。
环境杂草
