多项选择题
Under what two circumstances is the set JspBody method NOT called in a tag class that implements the Simple Tag interface？ （）
A. The tag is invoked without a body. B. The doTAb method throws an exception. C. The element has the value empty. D. The tag is called with the attribute skip-body=true
单项选择题 WhichHTTPmethodrepresentsarequestforinformationaboutthesupportedmethodsonanHTTPserver？（）
单项选择题 Which statement inserted at line II， retrieves the text from the second text field？（）
单项选择题 Which retrieves the binary input stream on line 13？（）
