Câu nào sau đây không đúng về nguyên lí hoạt động / mục đích sử dụng của hệ thống cung cấp thức ăn tự động cho lợn?

Đâu không phải là nội dung về vai trò của ngân sách nhà nước?

Khó khăn nào sau đây gây trở ngại lớn nhất đến việc phát triển kinh tế - xã hội ở đồng bằng sông Hồng?

Giá cả của hàng hóa là thước đo của

Cho hàm số \(f(x)\) liên tục và có đạo hàm trên \(\mathbb{R}\). Biết \(f(0)>0\). Đồ thị hàm số \(y=f^{\prime}(x)\) như hình vẽ:

Hàm số \(y=\left|f(x)-\frac{x^{2}}{2}\right|\) có bao nhiêu điểm cực trị?

Read the following passage 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.

SCREEN TIME: MENTAL HEALTH MENACE OR SCAPEGOAT?

    "Have smartphones destroyed a generation?" Jean Twenge - a psychology professor at San Diego State University - asked in her controversial book, iGen. In the book, she argues that those born after 1995 are facing "a mental-health crisis", and she believes it can be linked to growing up with their noses pressed against a screen. Her newest study provides more support for that connection, showing that teens who spent more than an hour or two a day interacting with their gadgets were less happy on average than those who had more face time with others.

    Twenge's conclusions have come up against criticism in the past. Some have accused her work of oversimplifying or overlooking data that may tell a slightly different story. Twenge recognises that her study suggests only a link between screen use and psychological well-being. A possible explanation is that kids are running to their screens to escape from the things in life that are making them unhappy. However, the surveys can't say whether screen time directly changes teens' mental health, the research states.

    Philanthropist Melinda Gates, whose three children were also born after 1995, wrote in The Washington Post, "phones and apps aren't good or bad by themselves, but for adolescents who don't yet have the emotional tools to overcome life's problems, they can aggravate the difficulties of growing up."

    At the same time, she said, kids are learning on their devices and connecting in novel ways. Other studies have explored the connection between social media and isolation and how "likes" activate the brain's reward centre. Some analyses have found that moderate use of these technologies is not harmful in itself and can even improve children's social skills and build emotional strength.

Which of the following is NOT mentioned as a factor contributing to the mental-health crisis in the passage?

Biểu hiện của đạo đức kinh doanh trong mối quan hệ giữa chủ thể sản xuất với khách hàng là gì?

Cho các phát biểu sau:

(1) Các tế bào là đơn vị cơ sở của cơ thể sống.

(2) Các tế bào có thành phần hóa học tương tự nhau.

(3) Tất cả các tế bào có vật chất di truyền là RNA.

(4) Hoạt động sống của tế bào là sự phối hợp hoạt động của các nguyên tử trong tế bào.

Số phát biểu đúng theo quan điểm của học thuyết tế bào là

Để Tạo bảng Casi: thì em cần?

Trong mặt phẳng Oxy , điểm \(M\) nằm trên đường tròn \((x+3)^2+(y-4)^2=4\) sao cho độ dài đoạn thẳng OM là ngắn nhất. Hoành độ điểm \(M\) là:

Hệ nhị phân là nền tảng của tất cả các công nghệ số, bao gồm máy tính và các thiết bị điện tử. Hệ nhị phân cho phép biểu diễn các số và dữ liệu dưới dạng nhị phân. Nó đóng vai trò quan trọng trong việc lưu trữ, xử lý và truyền tải thông tin trong các hệ thống điện tử hiện đại.

Dưới đây là một số nhận xét về thông tin trên:

Giá trị lịch sử của di sản được giữ gìn thông qua việc:

Read the following passage about Huawei company 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.

Huawei is a multinational company that makes  telecommunications  parts for  mobile phones , network equipment  and other high-tech  devices . It is the second largest such company in the world. Huawei has its headquarters  in Shenzhen, which became China’s first special economic zone  in 1979.

The Chinese technology company, which was founded  about 20 years ago, has over 100,000 workers in all parts of the world, more than Microsoft.  Most of the company is owned by its  employees .  Huawei started out in the rural  areas in China. In those days most of the telecom contracts  went to  state-owned  Chinese or  foreign  firms. As the company grew, it took hold of urban markets in big Chinese cities and in 1997 it  expanded to other countries.

Today, Huawei is the second biggest manufacturer of telecom equipment, after Ericsson. In 2011,  annual  sales  is expected to be about $12 billion dollars and  likely to get three times as high within the next ten years. Working for Huawei is something many young Chinese engineers and IT workers dream of. The 1.5 square km site  has modern apartments that can be rented, its own hospital, restaurants and bars where employees  can go to in their free time. For Chinese standards workers are well-paid. Although   Huawei has been concentrating  on making telecom parts and whole networks, the company is also looking into other industries in an  attempt to diversify and grow. At Shenzhen  engineers  are experimenting on new forms of video conferencing, a branch  that is expanding rapidly . The Chinese hi-tech giant  is also starting to produce cloud-based  hardware and computers that work  out of the box . 

Even though Huawei is one of the world leaders in producing mobile phone parts it is also pushing into the consumer market with its own  brand  of computers, tablets and smartphones. So far Huawei has failed  to reach  the American market because of security  reasons. The American  government  thinks it has connections  with the Chinese  military and is afraid it will spy  on the American  public 

Which of the following is NOT MENTIONED as a service or product that Huawei provides?  

Nhận định nào không đúng với vai trò của nước trong tế bào?

Tập hợp nhiều tế bào cùng loại và cùng thực hiện một chức năng nhất định tạo thành yếu tố nào?

Khai triển đa thức \(P(x)=(1+2 x)^{12}=a_{0}+a_{1} x+\ldots+a_{12} x^{12}\). Tìm hệ số \(a_{k}(0 \leq k \leq 12)\) lớn nhất trong khai triển trên.

Read the following passage about green living 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

          Green living refers to a lifestyle that promotes sustainability and environmental consciousness. This way of life encourages individuals to make choices that reduce their carbon footprint and conserve natural resources. Practices such as recycling, using renewable energy sources, and reducing waste are fundamental aspects of green living. By adopting these practices, individuals can contribute to the preservation of the environment and promote a healthier planet for future generations.

          One significant component of green living is the use of renewable energy sources. Solar, wind, and hydroelectric power are examples of renewable energy that can replace fossil fuels. Using renewable energy reduces greenhouse gas emissions and dependence on non-renewable resources. Additionally, renewable energy sources are often more sustainable and have less impact on the environment.

          Another important aspect of green living is sustainable consumption. This involves choosing products that are environmentally friendly and responsibly sourced. For example, buying locally produced food reduces the carbon footprint associated with transportation. Moreover, opting for products made from recycled materials helps conserve resources and reduce waste.

          Green living also emphasizes the importance of conserving water and energy. Simple actions such as turning off lights when not in use, fixing leaks, and using energy-efficient appliances can significantly reduce energy and water consumption. These practices not only benefit the environment but also save money on utility bills.

          Education and awareness play a crucial role in promoting green living. By educating individuals about the benefits of sustainable practices and how to implement them, communities can foster a culture of environmental responsibility. Awareness campaigns, workshops, and educational programs are effective ways to encourage people to adopt green living practices.

Which of the following is NOT mentioned as a practice of green living?

Tốc độ gia tăng dân số thế giới trong thế kỉ XXI như thế nào?

Sử dụng pháp luật được hiểu là công dân sử dụng đúng đắn các quyền của mình, làm những gì mà pháp luật: