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Plexorganizes all of your video, music, and photo collections, and gives you instant access to them on all of your devices. With the free Plex Media Server (down...
輻射危害，化學危害。1、輻射危害：電子加速器產生的高能電子束或X射綫等輻照(fu zhao)物質(wu zhi)會對人體(ren ti)造成輻射危害，會導緻(dao zhi)細胞損傷、基因突變、癌癥等疾病。2、化學危害：電...