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  2. Uses of English verb forms - Wikipedia

    en.wikipedia.org/wiki/Uses_of_English_verb_forms

    The present progressive or present continuous form combines present tense with progressive aspect. It thus refers to an action or event conceived of as having limited duration, taking place at the present time. It consists of a form of the simple present of be together with the present participle of the main verb and the ending -ing.

  3. Present continuous - Wikipedia

    en.wikipedia.org/wiki/Present_continuous

    The present continuous is formed by the present tense form of be and the present participle (-ing form) of the verb. [3] [4] For example, you would write the verb work in the present continuous form by adding the -ing suffix to the verb and placing a present tense form of be (am, are, is) in front of it: [3] I am working. You are working. She ...

  4. Electrical engineering - Wikipedia

    en.wikipedia.org/wiki/Electrical_engineering

    Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity, electronics, and electromagnetism.

  5. History of mathematics - Wikipedia

    en.wikipedia.org/wiki/History_of_mathematics

    All of these results are present in Babylonian mathematics, indicating Mesopotamian influence. [127] It is not known to what extent the Sulba Sutras influenced later Indian mathematicians. As in China, there is a lack of continuity in Indian mathematics; significant advances are separated by long periods of inactivity.

  6. Water - Wikipedia

    en.wikipedia.org/wiki/Water

    Water is an inorganic compound with the chemical formula H 2 O.It is a transparent, tasteless, odorless, [c] and nearly colorless chemical substance.It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent [20]).

  7. Recep Tayyip Erdoğan - Wikipedia

    en.wikipedia.org/wiki/Recep_Tayyip_Erdoğan

    Recep Tayyip Erdoğan [b] (born 26 February 1954) is a Turkish politician who is the 12th and current president of Turkey since 2014. He previously served as the 25th prime minister from 2003 to 2014 as part of the Justice and Development Party (AKP), which he co-founded in 2001.

  8. MG 3 machine gun - Wikipedia

    en.wikipedia.org/wiki/MG_3_machine_gun

    Beneficially however, replacing the barrel is an exceptionally simple procedure on the MG3. Non-observance of this technical limitation renders the barrel prematurely unusable. Care must be taken when replacing the barrel as after extended cyclical fire, the barrel can be dangerously hot, potentially approaching white hot.

  9. 2012 in science - Wikipedia

    en.wikipedia.org/wiki/2012_in_science

    25 May 2012: SpaceX's Dragon spacecraft (pictured) becomes the first commercial spacecraft to rendezvous with the International Space Station. The year 2012 involved many significant scientific events and discoveries, including the first orbital rendezvous by a commercial spacecraft, the discovery of a particle highly similar to the long-sought Higgs boson, and the near-eradication of guinea ...