单选题
发布日期:2020-04-11
Sending all broadcasts
Receiving all traffic from upstream switches
Receiving broadcast traffic
Negotiating spanning tree with upstream switches
Learning MAC addresses from upstream switches
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若,且设,则必有( )。
玻璃温度计校验核查中,工作温度计与校准合格的标准温度计在至少二个温度点的比对,读数差应不超过()。
连续选择边线创建倒角时,不能单独修改某一边线的倒角大小。
该公司生产的产品在占领本国市场的过程中,先占领大城市后占领中小城市和乡村,这种销售策略属于()
沉桩顺序一般由一端向另一端连续进行,当桩基平面尺寸较大时,宜由两端向中间进行。
教师用()的目光看学生,学生才能从老师眼神的信息中读到尊重和平等。
养分富集nutrientenrichment
某城市南郊雨水泵站工程临近大治河,大治河常水位为+3.00m,雨水泵站和进水管道连接处的管内底标高为-4.00m。雨水泵房地下部分采用沉井法施工,进水管为3m×2m×10m(宽×高×长)现浇钢筋混凝土箱涵,基坑采用拉森钢板桩围护。设计对雨水泵房和进水管道的混凝土质量提出了防裂、抗渗要求,项目部为此制定了如下针对性技术措施: (1)集料级配、含泥量符合规范要求,水泥外加剂合格; (2)配合比设计中控制水泥和水的用量,适当提高水灰比,含气量满足规范要求; (3)混凝土浇筑振捣密实,不漏振,不过振; (4)及时养护,保证养护时间及质量。项目部还制定了进水管道施工降水方案和深基坑开挖安全专项方案。 写出进水管道基坑降水井布置形式和降水深度要求。
患者男,30岁。发作性喘息6年,再发1天就诊。查体:T38.1℃,BP150/80mmHg,呼吸急促,咽红(+)。双肺布满哮鸣音。WBC6.3×109g/L,N78%。该患者最可能的诊断是()
防雷装置由()、()、()、()及()组成。
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