用SPD修改infopath表单是应急手段，如图：
<?mso-infoPathSolution name="urn:schemas-microsoft-com:office:infopath:KeFormP21:-myXSD-2011-11-11T02-01-28" solutionVersion="1.0.0.538" productVersion="14.0.0.0" PIVersion="1.0.0.0" href="http://win-u8vjb1d30b5/FormServerTemplates/KeFormP20.xsn"?><?mso-application progid="InfoPath.Document" versionProgid="InfoPath.Document.3"?><?mso-infoPath-file-attachment-present?><my:myFields xml:lang="zh-CN" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dfs="http://schemas.microsoft.com/office/infopath/2003/dataFormSolution" xmlns:tns="http://tempuri.org/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soap12="http://schemas.xmlsoap.org/wsdl/soap12/" xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/" xmlns:http="http://schemas.xmlsoap.org/wsdl/http/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:ns1="http://microsoft.com/webservices/SharePointPortalServer/UserProfileService" xmlns:s1="http://microsoft.com/wsdl/types/" xmlns:pc="http://schemas.microsoft.com/office/infopath/2007/PartnerControls" xmlns:my="http://schemas.microsoft.com/office/infopath/2003/myXSD/2011-11-11T02:01:28" xmlns:xd="http://schemas.microsoft.com/office/infopath/2003">
注意：红色部分是内容类型名，修改它可以更改内容类型。