The rearview mirror on the car can help us to judge the situation behind the car, and it can also help us to understand the car distance situation to a certain extent. Through the rearview mirror to determine the distance between the car has certain advantages but there are also certain risks hidden, together to see through the rearview mirror to determine the advantages and disadvantages of the car distance, in order to help us better choose to determine the car distance method. First, judging the approximate distance can make it difficult to determine the exact distance. The efficiency of the left and right side mirrors is different. The use of the right side mirror needs more attention. The domestic traffic is generally on the left side. We can only determine the approximate distance through the rearview mirror. For example, whether we can carry out special steering, whether the following vehicles are following the car, and whether we can change lanes in a safe area. And we see through the rearview mirror on the right is very limited, so the right rearview mirror is generally not as a major reference, so that when determining the accuracy of the car distance there is a certain degree of difficulty. Second, there are certain differences in the accuracy of judgments based on different models. Judging from the rearview mirror, we can't judge all cars from the same distance. We can see the distance of a car from the rearview mirror is 5 meters, but if it is an SUV or a commercial vehicle, then this distance may be smaller. Therefore, the state of the vehicle seen from the rear-view mirror cannot be used as a standard for all the vehicles. Vehicle models must be treated differently. Otherwise, they are very dangerous. It is suggested that you should play more distances, so that you can operate more safely. Third, the rational use of rearview mirrors to determine the distance between vehicles can ensure the safety of driving. No matter what kind of road you are driving, the safest way is to keep driving at a constant speed. Do not change lanes by overtaking. Do not turn at random and do not stop at random. If there are these special operations, it is necessary to promptly turn on the turn signal, give others prompts, and operate in combination with the rearview mirror to ensure safe driving.
operation in China.
Intranasal spray administration, no injection and no pain
Produced with SPF embryonated eggs
pollution is excluded.
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Analysis of Advantages and Disadvantages of Determining Vehicle Distance by Rearview Mirror
Influenza Vaccine, Live, Nasal, Freeze-dried Exclusively authorized by the WHO in China WHO
Influenza Vaccine, Live, Nasal, Freeze-dried is a cooperative project with the WHO, which has been included in Global Action Plan for Influenza Vaccines (GAP)[1]. Hundreds of millions of doses have been used in the world, and Changchun BCHT Biotechnology Co. has the exclusive right of production and
The vaccine is inoculated by nasal spray, equipped with nasal spray device, and only needs to spray once a year in two nostrils to prevent influenza.
Mucosal immunity + Cellular immunity + Humoral immunity
After influenza virus attacks human body, it widely exists in nasal cavity, respiratory tract and other mucosal parts, as well as in body fluids and cells.
Vaccination of Influenza Vaccine, Live, Nasal, Freeze-dried can quickly stimulate the triple immune response of human body, and carry out defense
against viruses in different parts:
·Intranasal administration can produce mucosal immunity (IgA antibody), which forms the first immune defense line in the nasal cavity.
·Produce humoral immunity (IgG antibody) to remove influenza virus from body fluids.
·Produce cellular immunity (T cells) to remove influenza virus from cells
3+N More extensive protection
The production strains are recommended and supplied by the WHO every year.
The vaccine can not only effectively resist the vaccine strain, but also produce cross immunity to other subtypes of influenza virus.
The chick embryos for vaccine production comes from SPF (specific pathogen free) chicken flocks, so the risk of exogenous pathogenic microorganism
Free of inactivator, split agent and preservative
High protection and fast antibody production
This is the first influenza vaccine in China that has been evaluated by the protection effect of etiology in clinical stage. The protective effect of phase III
clinical trial is consistent with the literature[2]
.
First, the immune barrier was formed in the nasal mucosa after LAIV vaccination. It has been reported that the antibody of nasal mucosa can be
produced in 3 days[3], which greatly shortens the time for vaccine to produce
protective effect.