Bạn hỏi - Chuyên gia trả lời
Bạn cần hỏi gì?
để truyền tải đi một công suất điện 100kW đi xa bằng dây dẫn có điện trở 20(ôm) người ta đặt vào hai đầu đường dây một hiệu điện thế 4000V a) tính công suất hao phí điệnb)để giảm công suất hao phí tải điện, người ta dùng một máy tăng thế với cuộn sơ cấp có số vòng là 2000 vòng để tăng hiệu điện thế trước khi tải điện lên đến 40000V. Tính số vòng dây cuộn thứ cấp
________, tell him I have gone to London.
You are advised to leave a wide ______ before you have your next child.
We decided to have a short weekend ______ in Paris.
Choose the option A, B, C, or D that best fits the sentence.
After the summer ______.business has picked up again this month.
He scored his first goal of the match three minutes after the lull/interval.
They usually went shopping during their lunch pause/break.
We ________ more chances to attack during the last game if the strikers ...... the ball more exactly.
There was a pause/break before Joe said, ‘I’m sorry, I can't help you.'
During a lull/interval in the conversation, I asked Irving about a comment he'd made earlier.
Circle the word which best fits the sentence.
We see each other at regular breaks/intervals - usually about once a month.
They met the news that the terrorists had lived among them with shock and
It still leaves us with fundamental about why the famine happened.
________ more carefully, he would not have had the accident yesterday.
Given how much _______ and opposition IVF faced when it was still an untried and somewhat speculative field of research in the late 1960s, it’s surprising how quickly it became accepted.
The money was taken out of the bank in small amounts so as not to arouse
________ here, he would help us with these troubles.
There’s considerable as to whether the government’s job creation strategies will work.
________ as much money as Bill Gates of Microsoft, I would retire.