Trong thiết kế kĩ thuật, phương tiện nào dùng để tính toán, thiết kế, kiểm tra, xây dựng bản vẽ, soạn thảo hồ sơ kĩ thuật?

Tìm một từ có nghĩa KHÔNG cùng nhóm với các từ còn lại.

Cho mô hình nguyên tử của nguyên tố nitrogen (N) như sau:

Số proton và số electron lớp ngoài cùng của nguyên tử N lần lượt là

Parabol \((P):y = {x^2} - 3x + 5\) có tổng số điểm chung với 2 trục là?

a. One useful suggestion is to reduce the use of private cars and choose public transport instead, which helps to lower air pollution and decrease traffic problems in cities.

b. In the long term, following such suggestions can lead to a more sustainable and responsible way of living.

c. These actions not only protect the planet but also create cleaner and healthier communities for people.

d. Another effective idea is to recycle materials such as paper, glass, and plastic, so that natural resources are saved and less waste is produced.

e. Improving the environment requires small but important changes in daily life.

Polypropylene (được tổng hợp từ propylene, CH\(_2\)=CH-CH\(_3\)) là một chất dẻo phổ biến, dùng để sản xuất các bao bì, túi nhựa. Công thức cấu tạo nào dưới đây là của polypropylene?

Các ngành công nghệ số và viễn thám có vai trò như thế nào đối với Sử học?

Việc muối chua rau quả là ứng dụng hoạt động của loại vi sinh vật nào sau đây?

Phát biểu nào không đúng với đặc điểm tầng đá trầm tích?

Chọn câu sai. Trong chuyển động thẳng nhanh dần đều thì

Cho góc \(x\left(0^{\circ} \leq x \leq 180^{\circ}\right)\) thỏa mãn \(\cos x=\frac{1}{4}\). Giá trị của \(P=\frac{\tan ^{2} x-\tan x+3 \cot x}{\frac{1}{2 \cos x}-5 \tan x+30 \cot ^{2} x}\) là

Bạn Sơn tìm nghiệm \(x\in \left[ 0;2\pi  \right)\) của ba phương trình sau đây:

• Phương trình (1): \(\text{cos}x=1\);

• Phương trình (2): \(\text{sin}x=\frac{1}{2}\);

• Phương trình (3): \(\text{sin}x+\text{cos}x=\frac{3}{2}\).

Mỗi phát biểu sau đây của bạn Sơn về các phương trình trên là đúng hay sai?

Read the passage carefully. Choose an option (A, B, C or D) that best answers each question from 16 to 22.

1. Like many emergency responders, Nicholas Groom is used to stress at work.  On the one hand, the stress can be helpful. “I find that when attending a serious incident, it helps me to maintain focus on the situation,” Nicholas Groom said. On the other hand, the work can be highly pressurized. “Too much stress can impair your ability to make decisions,” he adds. And Groom is not alone in his complicated relationship with stress.

2. Many people believe that there should be a balanced amount of stress. In other words, not too much stress so you’re not overwhelmed but not too little stress so you don’t feel unmotivated. After all, some anxiety is motivating; think of the adrenaline before a deadline or the excitement before a competition.  Sports fans sometimes even talk about a “gene” in some athletes who seem to play best in the decisive final moments of a match. Furthermore, many psychologists claim that performance in many situations increases with stress up to a point. Of course, any stress can cause harm when it’s prolonged. To take just one example, a long-term high heart rate is linked to cardiovascular diseases. And additional stressors, such as financial pressures or psychiatric issues, clearly affect how beneficially someone can respond to stress.  

3. So is there a way to harness stress to your advantage while being mindful of its detrimental long-term effects? One key factor is to avoid, whenever possible, the point when stress leads to mental and physical collapse. Crystal Wernicke, 30, has always used stress as a motivator. But juggling between parenting, a full-time job, a voluntary role and financial troubles at the same time became too much and eventually led to a two-month period of illness. Another factor is the presence of control. For those who feel powerless over their situation, stress is unlikely to be beneficial. But with some autonomy over stressful tasks, we are better able to convert that pressure into higher performance.

4. When it comes to stress and how it affects your performance, it’s helpful to recognize the variations in personality, type of stress and task that affect the level of pressure you are under, as well as understanding tools you can use to control and harness that stress. Ultimately, it’s not helpful to take a one-sided view, either demonizing or glorifying stress. As James C Quick, a management professor at the University of Texas, sums up: “Stress can be the kiss of death as well as the spice of life.”

Why was Crystal Vernicke sick for two months?

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.

The word its in paragraph 5 refers to______.

Tính đường đi của một vật rơi tự do trong giây thứ 4 kể từ lúc thả. Lấy \[g = 10m/{s^2}\]

CHỦ ĐỀ: THẾ GIỚI TUYỆT ĐẸP…

(Tham khảo bài văn của chủ đề trong đường link dưới đây ở trang 21)

https://tvsthpt.dlib.vn/app/doc-sach-ebook/d02db18272fe

Và trả lời câu hỏi sau:

Hoàn thành câu hỏi bằng cách chọn đáp án Đúng hoặc Sai.

Sự phát triển của thương nghiệp Đại Việt từ thế kỉ X đến XV không xuất phát từ nguyên nhân nào sau đây?

Tỉ lệ gia tăng dân số tự nhiên của Hoa Kì có đặc điểm nào?

Cuộc đời, số phận bất hạnh nàng Tiểu Thanh được nhắc đến trong Đọc Tiểu Thanh kí của Nguyễn Du giống số phận của

Trong GIMP, lệnh nào được sử dụng để tạo dãy khung hình cho ảnh động dựa trên hiệu ứng có sẵn?