多项选择题
A.The stub will increase network traffic.
B.The Transfer Object will decrease data staleness.
C.The stub will increase the logic necessary in the JSPs.
D.In both cases， the JSPs can use EL expressions to get data.
E.Only the Transfer Object will need to use a Business Delegate.
单项选择题 A developer is designing the presentation tier for a web application which requires a centralized requesthandling to complete common processing required by each request. Which design pattern provides asolution to this problem？（）
多项选择题 Inann-tierapplication，whichtwoinvocationsaretypicallyremote，notlocal？（）
单项选择题 A developer is designing a web application that makes many fine-grained remote data requests for eachclient request. During testing， the developer discovers that the volume of remote requests significantlydegrades performance of the application. Which design pattern provides a solution for this problem？（）