Công nghệ phù hợp nhất để tạo ra nắp máy như hình bên là

Nhận định nào sau đây không đúng với ý nghĩa của phương pháp kí hiệu?

Quyền về kinh tế, văn hoá, xã hội của công dân được quy định trong Hiến pháp năm 2013 có ý nghĩa như thế nào?

Cho đoạn chương trình:

a=b=1

c=1

d=2

print(a+b+c+d)

Kết quả trên màn hình là:

Read the following passage about the cultural diversity 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 1 to 10. 

    [I] In today's globalized world, cultural diversity has become a fundamental aspect of many societies. [II] Many countries are experiencing increasing levels of migration. [III] With the rise of immigration and the blending of traditions, people from various cultural backgrounds are now living side by side in cities across the globe. [IV]

    One of the key advantages of cultural diversity is the richness that it adds to a society. Different cultures introduce unique viewpoints, foods, languages, and traditions, which help people broaden their understanding of the world. In schools and workplaces, cultural diversity fosters creativity and innovation, as individuals from different backgrounds approach problems in innovative ways. However, there are also challenges associated with living in culturally diverse communities. Misunderstandings and communication barriers can arise when people are unfamiliar with each other's customs and values. To address these issues, societies must encourage cultural sensitivity and create opportunities for cross-cultural exchange.

    Governments and institutions around the world are beginning to implement policies that promote inclusion and respect for cultural differences. By celebrating diversity through events, education, and media representation, communities can create environments where people feel valued regardless of their background. Ultimately, embracing cultural diversity helps to build more peaceful and harmonious societies.

Which of the following can be inferred from the passage?

Định luật vạn vật hấp dẫn của Newton được cho bởi công thức $F=G\dfrac{m_1.m_2}{r^2}$. Trong đó $F$ là lực hấp dẫn giữa hai vật thể bất kì, $G$ là hằng số hấp dẫn, $m_1,\,m_2$ là khối lượng các vật, $r$ là khoảng cách giữa chúng. Đồ thị của hàm số cho bởi công thức này có tiệm cận đứng là $r=0$, điều này có nghĩa là khi $r$ dần về $0$ thì lực hấp dẫn sẽ tiến đến

Trong máy phát điện xoay chiều ba pha, rotor được cấu tạo là

Hàm số nào dưới đây là hàm số chẵn?

Phát biểu nào sau đây đúng khi nói về huyết áp?

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

Both of them worked harThey could pass the entrance examination.

Muốn xuất hiện một dòng điện cảm ứng trong một khung dây kín, ta cần

Nội dung nào sau đây thể hiện ý nghĩa của các nội dung về phát triển khoa học, công nghệ và môi trường được quy định tại Hiến pháp?

Read the passage carefully

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

Choose an option (A, B, C, or D) that best answers each question:

According to paragraph 3, which is TRUE about the salesman?

Trong không gian \(Oxyz\), cho hai vectơ \(\overrightarrow{u}\left( 1;3;-2 \right)\) và \(\overrightarrow{v}\left( 2;1;-1 \right)\). Tọa độ của \(\overrightarrow{u}-\overrightarrow{v}\) là: