Can respirators protect you from biological agents such as bacteria or viruses?
问6:呼吸防护口罩能够防细菌和病毒这类病原微生物 么 ?
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Q 32 : Do any of 3 M's disposable respirators contain fiberglass material?
问32:3M的随弃式呼吸防护口罩材料中是否含有玻璃纤维?
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Can medical facemasks be used to help reduce exposures to biological agents?
问7:使用医用口罩是否可帮助降低对微生物的暴露?
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Respiration can be controlled by wearing something over the mouth and nose.
呼吸作用可以通过在嘴和鼻子上戴上口罩之类的东西来控制.
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Can particles, such as bacteria or viruses, be reaerosolized from the respirator filter?
颗粒物, 诸如细菌或病毒, 是否能从防护口罩的滤料上重新进入空气中?
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而美国疾控中心的研究表明,口罩用料多总比少好。
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