单项选择题
A. Flyweight
B. Transfer Object
C. Service Locator
D. Dispatcher View
E. Business Delegate
F. Model-View-Controller
单项选择题 Adeveloperisdesigningamulti-tierwebapplicationanddiscoversaneedtologeachincomingclientrequest.Whichtwopatterns，takenindependently，provideasolutionforthisproblem？（）
单项选择题 Which is the correct web application deployment descriptor element for defining a servlet initialization parameter？（）
单项选择题 ServletAreceivesarequestthatitforwardstoservletBwithinanotherwebapplicationinthesamewebcontainer.ServletAneedstosharedatawithservletBandthatdatamustnotbevisibletootherservletsinA’swebapplication.InwhichobjectcanthedatathatAshareswithBbestored？（）