Khi xảy ra hiện tượng siêu dẫn thì

Truyện về các vị thần sáng tạo thế giới kể về những vị thần nào?

Chất nào sau đây có tác dụng diệt khuẩn có tính chọn lọc?

Cho các bước sau:

(1) Xử lí các dữ liệu thu thập được và báo cáo kết quả thực nghiệm.

(2) Chuẩn bị các điều kiện thí nghiệm, thiết kế các mô hình thực nghiệm phù hợp với mục đích thí nghiệm.

(3) Tiến hành thực nghiệm và thu thập các dữ liệu.

Quy trình thực hiện bằng phương pháp thực nghiệm khoa học là

Các phát biểu dưới đây là đúng hay sai khi nói về ứng dụng của tin sinh học?

Để chuyển s về xâu kí tự ta dùng hàm gì?

Auxin có vai trò như thế nào?

Phương án nào sau đây mô tả đúng nhất về lợi ích mà thành tựu phát triển tự động hóa đem lại?

Qúa trình xử lí thông tin gồm bao nhiêu bước?

Nguyên nhân của hiện tượng biển tiến, biển thoái là do đâu?

Ý nào sau đây phản ánh không chính xác về đặc điểm của nông nghiệp nước ta cuối thế kỉ XV – đầu thế kỉ XVI?

Loại công cụ nào dưới đây gắn liền với nền văn minh thông tin?

Read the following passage about Singapore Science Centre and mark the letter A, B, C, or D on your answer sheet to indicate the best answer to each of the following questions from 23 to 30.

The Singapore Science Centre, situated on a sprawling six-hectare site in Jurong, offers a captivating way to explore the wonders of science and technology. Here, visitors can engage with interactive exhibits that make learning both fun and memorable. Clap your hands, and colorful bulbs will light up; spin a wheel, and it will activate a fan. This engaging environment sparks curiosity and fuels the imagination of both children and adults.

The centre boasts more than four hundred exhibits across various fascinating topics, including solar radiation, communication, electronics, mathematics, nuclear energy, and evolution. These exhibits are designed to foster interest in science and technology among the public, making the centre a hub for educational exploration.

Notably, it is the first science centre to be established in Southeast Asia. Officially opened in 1977, the centre now welcomes an average of 1,200 visitors daily, highlighting its enduring popularity and educational value.

The exhibits are thoughtfully arranged across four main galleries: the Lobby, Physical Sciences, Life Sciences, and Aviation. To ensure a fresh and engaging experience, the exhibits are renewed annually, encouraging repeat visits. Visitors are encouraged to interact with the exhibits, as opposed to traditional “hands-off” policies in most museums. Here, pushing buttons, turning cranks, or pedaling mechanisms are all part of the fun and learning experience.

The Discovery Centre, added in 1985, is specially designed for children aged three to twelve, providing an exciting space for young minds to explore and experiment. Most recently, a stone-age exhibit was introduced, showcasing extinct animals and early human life, offering insights into prehistoric times.

With its interactive displays and immersive environment, the Singapore Science Centre continues to inspire a love for science and discovery, making it an unforgettable destination for learners of all ages.

According to the passage, which of the following statements is TRUE?

Mô phân sinh đỉnh không có ở vị trí nào sau đây của cây?

Bệnh giun đũa lợn?

Trong các phản ứng hoá học sau, phản ứng oxi hoá – khử là

Biết nhiệt hóa hơi riêng của thủy ngân là 2,96.10⁵ J/kg. Nhiệt lượng cần để làm bay hơi hoàn toàn 2 kg thủy ngân là

Read the passage below and choose A, B, C or D.

Millions of people are using cellphones today. In many places, it is actually considered unusual not to use one. In many countries, cellphones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a traveling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree.

What is it that makes mobile phones potentially harmful? The answer is radiation. High-tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often.

What is mentioned about the man who used his cellphone too often in paragraph 3?

Cấp độ tổ chức sống là

Ở kì nén của động cơ Diesel 4 kì, pít tông chuyển động như thế nào?