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  1. The at sign (@), otherwise known as the ampersat, is a logogram. It is used in bills, emails and programming. In email, it is used to show a specific domain of an email address. In bills, it used to mean "at a rate of". For example, 7 widgets @ £ 2 equals £14. In programming, the at sign has been used in a wide range of programming languages.

    • Crew
    • Equipment
    • Air Ambulance

    An ambulance usually has two crew members. One person drives while the other looks after the patient in the back. A paramedic will have at least a year of medical training. They can do fairly advanced treatment. Not all ambulances have paramedics on them. In the United States, some may have Emergency Medical Technicians (EMTs). Emergency Care Assis...

    In the past, ambulances only gave patients a ride to hospital. They only carried a small amount of first aid equipment . This is still true in some parts of the world. Most modern ambulances will have more equipment and medicine. In some countries, an ambulance is like a mobile doctor's clinic. Ambulances or other Medical vehicles have some or all ...

    Air ambulances became more common in the late 20th century. They are helicopters that carry much of the same equipment as a normal ambulance. In the United States, the Coast Guard runs a public air ambulance service using helicopters. These are often needed when emergencies happen at sea. There are also privately owned air ambulance servicesthat pr...

  2. Epenthesis is a term in phonology. It refers to adding one or more sounds to a word. If it is added at the beginning, it is called prothesis. If added at the end of the word, it is called paragoge. There are two types of epenthesis: when a consonant is added, and when a vowel is added.

  3. Pincer movement. This is called “Turan Tactic” and this tactic is originated from Turks which was used very successfully as early in 800 B.C. Scythians. The pincer movement, or double envelopment, is a tactic in which forces attack both flanks (sides) of an enemy formation at the same time. The pincer movement can be used when opposing ...

  4. CBRNE is an acronym for Chemical, Biological, Radiological, Nuclear, and Explosive materials. These materials are very dangerous, and can hurt many people. When they are used on purpose, CBRNE materials are weapons of mass destruction. However, CBRNE events can also happen accidentally. [1]

  5. Numbers that are larger than one million are usually either represented using scientific notation, or by words. There are two main ways of using words to write large numbers. The American way or "Short form" for naming large numbers is different from the European way or "Long form" of naming large numbers. ...

  6. Hydroxide in chemistry is a name given to the diatomic anion OH −, made up of oxygen and hydrogen atoms. Most chemical compounds that contain hydroxides are bases . An Arrhenius base is a substance that when dissolved in an aqueous solution, it produces hydroxide ions. Therefore, hydroxide ions are heavily involved in acid-base reactions.

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