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混凝土结构用的钢筋可分为哪两大类?钢筋的强度和塑性指标各有哪些?
男性,50岁。咳嗽、咳白色泡沫痰5个月,胸痛半月。胸片示右肺下叶内带近肺门处有一直径3cm分叶状阴影,密度不均匀,周围呈片状阴影。最可能的诊断是()
多数经营风险最终都会产生财务后果,从而影响财务报表,所有经营风险都会导致重大错报风险。 ( )
6月5日,以“过去和现在:重新构想非洲未来”为主题的()世界经济论坛非洲会议在南非开普敦落下帷幕。在为期3天的会议期间,南非总统祖马、加纳副总统阿米萨一阿瑟等来自75个国家的1250名代表回顾了过去25年来非洲经济发展成就,并围绕非洲经济社会发展面临的机遇与挑战、资本市场、科技与贸易、青年和妇女问题等议题展开了深入讨论。
牙周病是指发生在的感染性疾病,其特点是()及()慢性进行性破坏,并可导致牙齿丧失。
心理描述法
有关举报的说法正确的是()。
一个国家或地区要成为避税港,一般需要具备的条件有()。
呼吸商RQ
对于难免流产,下列哪项不恰当()
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