口罩，作为我们这一年来最亲近的伙伴，已从开始的别扭、不舒服，变成了如今的习惯使然，可以说，口罩以其低廉的成本成为抗击疫情战役中最有效的反击。那么，你知道口罩该怎么选择吗?疫情口罩选择的英语手抄报怎么写呢?下面是小编整理的关于疫情口罩选择的英语手抄报的资料，希望对你有所帮助!
About the choice of mask, there has been a lot of popular science recently.Medical masks can be divided into three types: 1.2.Medical surgical mask; 3.Medical protective mask.
1.General surgical mask: the texture is relatively thin, which conforms to YY/ t0969-2013 standards, and its protection against pathogenic microorganisms is not exact.The lack or filtration requirements for particulate bacteria are lower than those for surgical masks and respirators.Can be used for general medical activities, as well as when you have a respiratory infection.
2.Medical surgical mask: the standard medical surgical mask has an inner layer of hygroscopicity, a middle layer of filtration and an outer layer of water resistance, which conforms to yy0469-2011 standard and can prevent the spread of blood, body fluids and spatter.It is suitable for contact with diseases spread by droplets and for invasive or respiratory operations by medical personnel.
3.Medical protective mask: it conforms to the gb19083-2010 standard and is divided into N95 and N99 levels.It prevents airborne transmission of an infection smaller than 5 microns in diameter or close contact with a droplet borne disease.Suitable for air isolation protection in medical environment.
The mask cannot be used all the time.The following situations suggest that it needs to be replaced:
1.When the mask is contaminated (blood, body fluids, droplets, etc.);
2.If the mask is damaged;
3.When the mask cannot fit the face;
4.When breathing resistance increases;
5.After use in the isolation ward or after close contact with patients;
6.if the activated carbon mask, when the mask odor.
关于口罩的选择，最近已经有了很多的科普知识。医疗口罩可分为三类：1.普通外科口罩 2.医用外科口罩 3.医用防护口罩。
1.普通外科口罩：质地较薄，符合YY/t0969-2013标准，对病原微生物的防护能力不强是的。那个对微粒细菌的缺乏或过滤要求低于外科口罩和手术器械呼吸器。可以用于一般医疗活动，以及当你有呼吸道感染的时候。
2.医用外科口罩：标准医用外科口罩内层吸湿，中层过滤，外层防水，符合yy0469-2011标准，能防止血液扩散，体液和飞溅。适用于接触由飞沫传播的疾病以及医务人员进行的侵入性或呼吸性手术。
3、医用防护口罩：符合gb19083-2010标准，分为N95和N99两种水平。它可以防止直径小于5微米的感染在空气中传播或与飞沫密切接触疾病。适合用于医疗环境中的空气隔离保护。
什么情况下需要更换口罩：
1.口罩被污染(血液、体液、飞沫等);
2.口罩损坏;
3.口罩不能贴合面部时;
4.呼吸阻力增加时;
5.在隔离病房使用或与病人密切接触后;
6.如果是活性炭口罩，当口罩有异味时。
