- 问题详情:AccordingtoGermanresearchers,forcingpeopletobehappyandpoliteallthetimeislikelytomakethemsick.Theybelievemostatriskareairhostesses,callcenteroperators,waitersandotherworkersinclosecontactwiththepublic.ProfessorDicterZapf,aresearcherintohumanem...
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