sumanrahmatova
31.05.2020 02:38

1.Закончите предложения, используя данные ниже слова, при необходимости меняя их грамматическую форму. To provide, to refer, strong, to invent, to be, to run, to transfer, to charge, to use, liquid, to coat. 1. The first battery … in 1800 by Alessandro Volta. 2. Near the end of the 19th century, the invention of dry cell batteries, which replaced … electrolyte with a paste, made portable electrical devices practical. 3. In the modern sense of the term, a battery is a device that … a current by means of an electrochemical reaction, wherein electrons … from one chemical to another. 4. However, the original usage of the term not to an electrochemical cell but to a set of linked Leyden jars, which, in the 18th century were used by scientists as a means of storing charge. 5. Leyden jars … the first capacitors, and basically consisted of a glass jar whose inner and outer surfaces with metal foil, and had an … electrode through its center. 6. They could … with a static generator, and … by touching a conductor to its electrode. 7. Scientists could obtain … discharges by linking the electrodes of multiple jars together. 8. It was Benjamin Franklin who, in 1748, first … the word "battery" to describe a similar assembly of glass plates with lead sheets pasted on either surface. 2. Выберите из предложенных определений одно, наиболее точно отражающее значение выделенного слова, в каждом из следующих предложений: 1. Batteries as continuous sources of electrical energy are the result of a long series of experiments which started with the discoveries of Alessandro Volta more than one hundred years ago. a) the point or place from which something originates; b) any person, book, organization, etc., from which information, evidence, etc., is obtained; c) the electrode region in a field-effect transistor from which majority carriers flow into the inter electrode conductivity channel; 2. Today battery cells are manufactured in two common forms, dry cells being used in flash lights, portable radios, etc. a) a small simple room, as in a prison, convent, monastery, or asylum; b) a device for converting chemical energy into electrical energy, usually consisting of a container with two electrodes immersed in an electrolyte; 3. The difference of potential between the terminals of every dry cell, regardless of size, is approximately 1.5 volts. a) the state or quality of being unlike; b) a disagreement or argument; c) a degree of distinctness, as between two people or things; 4. The difference of potential between the terminals of any dry or wet cell depends in principle upon the particular chemicals used in its construction. a) exacting or difficult to please, esp. in details; b) of or belonging to a single or specific person, thing, category, etc., specific; 5. The negative terminal of a dry cell is the zinc metal container in which all chemical ingredients are sealed, whereas the positive terminal is a round carbon rod . a) a switch or bundle of switches used to administer corporal punishment; b) a metal shaft that transmits power in axial reciprocating motion; c) a slim cylinder of metal, wood, etc.;

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Ответ:
vasad2005
10.05.2023 07:05

Объяснение:

present perfect ты используешь, когда • действие завершилось недавно (напр: she has tidied her room)

• действие, которое завершилось в неустановленное время и оно связано с настоящим (напр: He has lost his keys. (He is still looking for them))

• когда у действия есть акцент на число или дата(например: she has spoken to two clients since 12 o'clock)

•какие-то изменения, происходившие в течение времени (например: she has lost weight)

present perfect continuous ты используешь, когда:

•действие началось в и до сих пор продолжается (напр: he has been writing a letter for two hours. (he started two hours ago and he is still writing))

• действие в котрое имеет результат (например: she has been crying. Her eyes are red.)

• действия выражают эмоции по типу злость, раздражительность, критика (например: who has been using my hairbrush? (annoyance))

• есть акцент на продолжительность (обычно используется for, since или how long)

не коротко конечно, но я пыталась )

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Ответ:
Ḱặрặṃềӆьҟӑ
10.05.2021 12:48

Dear Julia,

Thank you for your letter. Sorry that I haven’t written to you for a long time but I have been busy.

When I have my spare time I go to the sport club, go for a walk and, of course, sleep. To tell you the truth, all members of my family prefer different kinds of activities, for example, my mom prefers cooking, my grandfather likes sitting with my sister. So, I prefer listening to music, and, as you know, going to parties!

Wow! Your birthday! It’s cool! Who was invited to your party? What presents did you get? And what about the best present?

Sorry, but I must go now. Hope to hear from you soon.

Best wishes,

Vova

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