What is the Effect of Coronavirus on Civil Services Exams?

 

2021 National Civil Service Exam Preparation affect of new coronavirus

Huatu National Civil Service Examination Network Synchronously Unknown Release: 2021 National Civil Service Exam Preparation: What is the new coronavirus? Please read below for details:

　　 Recently, there have been outbreaks of novel coronavirus pneumonia in many parts of the country.

 

　　 On January 20, 2020, the National Health Commission included pneumonia caused by the new coronavirus into the Class B infectious diseases stipulated in the "Law of the People's Republic of China on the Prevention and Control of Infectious Diseases" and adopted preventive and control measures for Class A infectious diseases.

 

　　 On February 8, the Joint Prevention and Control Mechanism of the State Council held a press conference. At the meeting, the spokesperson of the National Health Commission introduced the National Health Commission's "Notice on the Temporary Naming of Novel Coronavirus Pneumonia". Among them, it is clear that it is now decided to temporarily name the "new coronavirus pneumonia" as "new coronavirus pneumonia", or "new coronary pneumonia" for short, and "NCP" in English for short.

　　 The 2019 novel coronavirus, or "2019-nCoV", was discovered due to a case of Wuhan viral pneumonia in 2019, and was named by the World Health Organization on January 12, 2020.

 

 

　　 Novel coronavirus under the microscope

　　 (1) Main symptoms of COVID-19 Infection

　　 People infected with the virus will have symptoms of varying degrees, some are just fever or mild cough, some will develop pneumonia, and some will be more serious and even die.

 

　　 The fatality rate of the virus is about 2% to 4%, but this is a very early percentage and may change as more information becomes available. At the same time, this does not mean that it is not serious. It just means that not everyone who is infected with the virus will face the most serious consequences.

 

　　 (2) Ways of transmission of COVID-19

　　 Respiratory droplets and contact transmission are the main transmission routes, and the transmission routes such as aerosol and fecal-oral transmission have yet to be clarified.

 

　　 (3) Susceptible people

　　 People of all ages can be infected, but the infection rate in children is relatively low. Adults are mainly infected. Among them, the elderly and the weak and sick seem to be more likely to be infected. There is no evidence that pets such as cats and dogs can be infected.

 

　　(4) Prevention method against Coronavirus

　　 1. Strengthen personal protection

　　 (1) Avoid going to crowded public places

Avoid contact with patients with fever and respiratory tract infection, and wear a mask when contacting them.

 

　　(2) Wash your hands frequently

Especially when the hands are contaminated by respiratory secretions, after touching public facilities, after taking care of patients with fever, respiratory infection or vomiting and diarrhea, after visiting a hospital, handling contaminated items, and after contact with animals, animal feed or animal feces.

 

　　 (3) Don't spit anywhere

Cover your mouth and nose with a tissue or elbow when sneezing or coughing.

 

　　 (4) Strengthen exercise, regular work and rest, and maintain indoor air circulation

 

　　 2. Avoid contact with wild poultry

　　 (1) Avoid contact with poultry, wild animals and their excreta and secretions, and avoid buying live poultry and wild animals.

 

　　(2) Avoid going to animal farms and slaughterhouses, live poultry markets or stalls, wild animal habitats or other places. You must protect yourself when you go, especially those who are occupationally exposed.

 

　　 (3) Avoid eating wild animals. Do not eat sick animals and their products.

Buy chilled poultry meat from regular channels, fully cook poultry meat, eggs and milk when eating poultry, and separate raw and cooked utensils and clean them in time when handling fresh products to avoid cross-contamination .

 

　　3. Eliminate sickness to work and parties

　　 If you have fever, cough and other symptoms of respiratory tract infection, rest at home, reduce going out and travel, and ventilate the room when the weather is good. 

Please wear a mask when touching others. Avoid going to work, class and gatherings with illness.

 

　　 4. See a doctor promptly

　　 Returning from travel in Wuhan and other places, if symptoms of respiratory tract infection such as fever and cough occur, you should choose the nearest hospital for fever clinics based on your illness, wear a mask, and inform your doctor of similar patient or animal contact history and travel history.

 

Viruses, bacteria and fungi

　　 (1) Introduction

　　 1. Virus

　　 Virus is a small, simple structure, contains only one type of nucleic acid (DNA or RNA), must parasitize in living cells and multiply by replication. A virus is a non-cellular life form. It is composed of a long nucleic acid chain and a protein shell. 

The virus does not have its own metabolic mechanism or enzyme system. Therefore, when the virus leaves the host cell, it becomes a chemical substance that has no life activities and cannot reproduce independently. 

Once it enters the host cell, it can use the material and energy in the cell and its ability to replicate, transcribe, and translate to produce a new generation of viruses like it based on the genetic information contained in its own nucleic acid.

 

　　 2. Bacteria

　　 Bacteria is one of the main groups of organisms, belonging to the domain of bacteria. It is also the most numerous of all living things, and it is estimated that there are about 5×1030 in total.

The shape of bacteria is quite diverse, mainly spherical, rod-shaped, and spiral. Bacteria also have a great influence on human activities.

On the one hand, bacteria are the pathogens of many diseases, including tuberculosis, gonorrhea, anthracnose, syphilis, plague, trachoma and other diseases are all caused by bacteria.

However, humans often use bacteria. For example, the production of cheese, yogurt and fermented rice, the production of some antibiotics, and the treatment of waste water are all related to bacteria.

In the field of biotechnology, bacteria are also widely used.

 

　　 3. Fungus

　　 Fungus is a kind of eukaryote. The most common fungi are various types of mushrooms. In addition, fungi also include molds and yeasts. More than 70,000 fungi have been discovered, and it is estimated that only a small half of all that exist.

Most fungi were originally classified as animals or plants, but now they have become their own realm, divided into four categories. Fungi form a family of its own, distinguished from plants, animals, and bacteria.

The biggest difference between fungi and the other three organisms is that fungi’s cells have cell walls containing chitin (also called chitin, chitin, and chitin) as the main component, and plant cell walls are mainly composed of cellulose. different.