Phương án nào dưới đây liệt kê hai phân loại chính của Trí tuệ nhân tạo (AI)?

Cường độ điện trường tại một điểm đặc trưng cho

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

Although noise, commonly defined as unwanted sound, is a widely recognized form of pollution, it is very difficult to measure because the discomfort experienced by different individuals is highly subjective and, therefore, variable. Exposure to lower levels of noise may be slightly irritating, whereas exposure to higher levels may actually cause hearing loss. Particularly in congested urban areas, the noise produced as a by-product of our advancing technology causes physical and psychological harm, and detracts from the quality of life for those who are exposed to it.

Unlike the eyes, which can be covered by the eyelids against strong light, the ear has no lid, and is, therefore, always open and vulnerable; noise penetrates without protection. Noise causes effects that the hearer cannot control and to which the body never becomes  accustomed. Loud noises instinctively signal danger to any organism with a hearing mechanism, including human beings. In response, heartbeat and respiration accelerate, blood vessels constrict, the skin pales, and muscles tense. In fact, there is a general increase in functioning brought about by the flow of adrenaline released in response to fear, and some of these responses persist even longer than the noise, occasionally as long as thirty minutes after the sound has ceased.

Because noise is unavoidable in a complex, industrial society, we are constantly responding in the same way that we would respond to danger. Recently, researchers have concluded that noise and our response may be much more than an annoyance. It may be a serious threat to physical and psychological health and well-being, causing damage not only to the ear and brain but also to the heart and stomach. We have long known that hearing loss is America's number one nonfatal health problem, but now we are learning that some of us with heart disease and ulcers may be victims of noise as well. Fetuses exposed to noise tend to be overactive, they cry easily, and they are more sensitive to gastrointestinal problems after birth. In addition, the psychic effect of noise is very important. Nervousness, irritability, tension, and anxiety increase affecting the quality of rest during sleep, and the efficiency of activities during waking hours, as well as the way that we interact with each other.

Based on the passage, how does noise affect psychological and physical health in industrial societies?

Phương trình tiếp tuyến của đồ thị hàm số \(y=\frac{-x+3}{x-1}\) tại điểm có hoành độ \(x=0\) là:

Myricyl cerotate là hợp chất hữu cơ có nhiều trong lá của loài cây cọ Brazil. Ngày nay, myricyl cerotate được dùng để sản xuất “sáp” làm bóng các vật dụng nội thất. Công thức của myricyl cerotate được biểu diễn như sau:

Phát biểu nào sau đây không đúng về chất trên?

Cho mặt phẳng \((P):2x+3y+5z-4=0\) và mặt phẳng \((Q)//(P)\). Vectơ nào sau đây là một vectơ pháp tuyến của mặt phẳng \((Q)\)?

Đại lượng nào đặc trưng cho khả năng tích điện của tụ điện?

Ở khu vực Mỹ Latinh có thuận lợi nào sau đây để phát triển cây lương thực và thực phẩm?

Thế giới sống liên tục tiến hóa là nhờ cơ chế