Why wearing a mask to keep a distance and ventilating more can prevent viral infections from a physi

What wearing a mask, keeping a distance and ventilating more can effectively prevent viral infection, and from a physical point of view, this I do, which can certainly be guaranteed. Sponsor more than 70 ventilation can have a business stabilizer bar because your nose is not infected with this outside of this public welfare, so there are very few slightly better masks.

Wearing masks, keeping a distance, and ventilating more are actually controlling the channels of infection.

Wearing a mask can prevent the virus from entering the mucous membranes, and opening a window can dilute and blow away the virus.

Wearing a mask itself is already reducing its own virus emissions. Keeping a distance can effectively avoid the spread of viruses from each other, and more ventilation can allow air circulation and reduce virus accumulation.

Because the virus does not spread too far, it will die at a certain distance. Ventilation helps the virus to spread. Wear a mask to stop the spread of the virus.

Is it a virus or a bacterium from a physical point of view, far away from you? It can't be directly touched, it's a way of physical isolation.

Why wearing a mask and keeping a distance are red, can be effective, there is leisure, there is leisure to prevent virus infection after the strength to consider these, because the air is green. And Liu Tong, well, can alleviate the existence of human uh virus.

The virus is transmitted by droplets, and wearing a mask can prevent droplets from entering the body.

Is it not easy for the virus to attach to the body or inhale it into the lungs?

1. The difference between viruses and germs: the size of germs is generally about 3 microns, and ordinary disposable medical masks can block them; The size of the virus is more likely, and it is generally less than 1 micron, so masks with better filtration effect are needed.

2. The key to anti-virus masks is that the mask has a good filtration effect, a good sealing effect and the safety of the mask material.

3. Which masks can prevent the virus better: the effect of KN90 and KN95 levels is good.

Wearing a multi-layered mask can effectively prevent the virus. (Silver Trap).

a.That's right. b.Mistake.

Correct answer to the case of the brigade: b