如何正确佩戴口罩

来源 :半月选读 | 被引量 : 0次 | 上传用户:teruiandi
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
佩戴口罩无疑是隔离病毒、预防流感的有效防范措施之一,有关专家日前对如何正确佩戴口罩做出了详细介绍。专家指出,佩戴口罩前以及摘下口罩前后都必须洗手;口罩有颜色的一面向外,有金属片的一边向上;系紧 Wear a mask is undoubtedly isolated virus, one of the effective prevention measures to prevent influenza, the experts recently made a detailed description of how to wear masks correctly. Experts point out that wearing a mask before and after removing the mask must be washed before and after; masks have a color-oriented outward, the metal side up; tie tight
其他文献
  Effects of cis-1,4 content, molecular weight distribution ofBR9000, Nd-BR and commercial Nd-BR on the mechanical and dynamic mechanical properties were stud
会议
  SnO2 is a typical wide band gap (Eg =3.6eV) n-typed semiconductor which can be widely used in solar cells, electric materials and gas materials and other fi
会议
  Nowadays, fuel cell is considered as one of the best devices that can meet our energy demand and many great efforts have been devoted to the fabrication of
会议
老年性白内障是一种代谢障碍性疾病,又是因晶体混浊而导致视力下降的常见眼病.随着社会总人口的增加,人均寿命的延长,患本病的人数将迅速增加.据世界卫生组织和国内提供的信
会议
The representation of 1/f signal with wavelet transformation is explored. It is shown that a class of 1/f signal can be represented via wavelet synthetic formu
问:我患前列腺肥大好几年了,每天晨起都排尿困难,请问有什么方法缓解这种情况?答:对于患有前列腺肥大的老年男性来说,早期会出现明显的排尿困难。这是因为前列腺位于膀胱和尿
  2-Phenyl-benzodioxole (PhBDO) used as coinitiator was synthesized based on benzodioxole.The structure was characterized by FT-IR, 1H NMR and 13C NMR.Laser f
会议
  Vinyl ethers photopolymerization has been videly studied for many years, while the vinyl ethers electropolymerization has been rarely investigated.Recently,
会议
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊