单项选择题
A. A detail element
B. A Body fault code
C. An application-specific fault code
D. A fault string element with a value of "Body"
单项选择题 HowcanadeveloperensurethatafaultwilloccuriftheservicedoesnotrecognizeaSOAPheaderentrycontainingatransactionnumber？（）
多项选择题 AnRPC/encodedWebserviceexperiencespoorperformanceathighmessagevolumes.Whatcanadeveloperdotoimprovethisperformance？（）
单项选择题 WhichofthefollowingisMOSTlikelytoimprovetheperformanceofSOAP-basedWebservices？（）