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yenmau1710
2 năm trước
Một vật sáng AB được đặt vuông góc với trục chính của TKHT có f =12cm , A nằm trên trục chính , cách TK 8cm . Biết AB cao 2cm a) Tính khoảng cách từ ảnh đến TK b) Tính chiều cao của ảnh giúp e vs ạ
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Read the passage below and decide whether the statements are TRUE or FALSE? We are all around computers. Computers play an important play in our day to day lives, like we are very much dependent them for doing many things including giving users the ability to quickly and easily store and process data. Since the invention of computer they have evolved in terms of increased computing power and decreased size. Computers are used in many sectors like Education, Health and Medicine, Financial Institutions, Transport System, E-Commerce, Defence etc. Computers connect us to the world of unknown. They help us gathering knowledge and huge information from the internet and storing it. Computers are multitasking and accurate enough to be used almost anywhere and everywhere including banks. Computer provide security from destructive forces and from unwanted action from unauthorized users like cyber attack or access attack. Now computer is not just a calculating device, it has become much more than that. One of the main advantages of computer is its incredible speed, which helps human to complete their task in few seconds. All the operations can be performed very fast just because of its speed else wise it takes a long time to perform the task. Question 1: Computers help store and process data. Question 2: Computers are not used in Defence. Question 3: Banks use computers because they’re multitasking and accurate. Question 4: Computers provides prevention against cyber attack or access attack. Question 5: Computers are not speedy enough to help human to complete their task in few seconds.

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