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Two great inventors LászlóBíró was born in Budapest in 1899. After he left school, he studied medicine a university, but he didn’t finish his studies

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Two great inventors LászlóBíró was born in Budapest in 1899. After he left school, he studied medicine a university, but he didn’t finish his studies. He did a number of different jobs and then became a journalist in the 1930s. He and his brother Gyorgy then invented a new type of pen with a small … Đọc tiếp

Đổi đơn vị a) 0,25kV = ……………….V b) 0,75V = ……………….mV c) 3800V = ……………….kV d) 25kV = ……………….V e) 1,5A = ……………….mA f) 1015mA = ……………….A g) 1,2kV = ……………

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Đổi đơn vị a) 0,25kV = ……………….V b) 0,75V = ……………….mV c) 3800V = ……………….kV d) 25kV = ……………….V e) 1,5A = ……………….mA f) 1015mA = ……………….A g) 1,2kV = ……………….V h) 0,1V = ……………….mV i) 4500V = ……………….kV j) 10kV = ……………….V k) 2,4A = ……………….mA l) 113mA = ……………….A

I. Choose the word or phrase that best fits the blank space in the following passage. Either boys or girls, usually aged from seven to ten, play the t

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I. Choose the word or phrase that best fits the blank space in the following passage. Either boys or girls, usually aged from seven to ten, play the two-person game of “Mandarin’s Box”. They draw a rectangle on the ground and (1) it into ten small squares called “rice fields” or “fish ponds”. They also … Đọc tiếp