多项选择题
Which three are guaranteed to be valid for the element of a web application deployment descriptor？（）
A. FORM B. DIGEST C. NORMAL D. ENCRYPTED E. CLIENT-CERT
多项选择题 Which the three EL expressions， inserted at line 15， are valid and evaluate to "3"？ （）
单项选择题 GivenaJSPerrorpage，whichimplicitobjectreferstotheuncaughtThrowablethatresultedinthepagebeinginvoked？（）
多项选择题 Which two are true？（）
