多项选择题
A. HTTP Basic Authentication B. Form Based Authentication C. HTTP Digest Authentication D. HTTPS Client Authentication
A. FORM B. DIGEST C. NORMAL D. ENCRYPTED E. CLIENT-CERT
A. ${vals.2 } B. ${vals ["2"]} C. ${vals.index } D. ${vals[index]} E. ${vals} [index] F. ${vals.(vals.index)} G. ${vals[vals[index-1]]}