啊，是医护人员，致敬！为何负压安全？正压对室内人才安全。负压是对室外的人安全

来源: 老键于 2020-04-03 17:24:34 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.