单项选择题 You have created a JSP that includes instance variables and a great deal of scriptlet code. Unfortunately，after extensive load testing， you have discovered several race conditions in your JSP scriptlet code. To fixthese problems would require significant recoding， but you are already behind schedule. Which JSP codesnippet can you use to resolve these concurrency problems？（）

单项选择题 WhichimplicitobjectisusedinaJSPpagetoretrievevaluesassociatedwithentriesinthedeploymentdescriptor？（）

单项选择题 You have built a collection of custom tags for your web application. The TLD file is located in the file： /WEB-INF/myTags.xml. You refer to these tags in your JSPs using the symbolic name： myTags. Which deployment descriptor element must you use to make this link between the symbolic name and the TLD filename？（）