单项选择题
Which element is the parent of the tag in the web application deployment descriptor？ （）
A. <web-app> B. <filters> C. <servlet> D. <filter-list>
单项选择题 Which retrieves the value associated with “foo” from within an HttpServlet？（）
单项选择题 What is the result of a client request of the Source servlet with no query string？（）
多项选择题 ForagivenServletresponseresponse，whichtworetrieveanobjectforwritingtextdata？（）
