BackgroundIn the past decade, the changing labor market seems to have rejected the traditional standards employment and has begun to support a variety of non-standard forms of work in their place. The purpose of our study was to compare the degree of job stress, sources of job stress, and association of high job stress with health among permanent and fixed-term workers.
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机译:CCTV PA / AV / CPTED盒CCTV PA / AV / CPTED盒3 CCTV与CPTED盒的组合SmartPole以及与Smartpole Cpted Box的Muli-Provider System合同,具有防犯CCTV PA / AV广播系统和方式 为工人防灾和工业安全和健康管理中央电视台监测系统播放市政公共关系和健康管理中央电视台监测系统 工人防灾