CAAC VIP USA CCTV BBC PRC UN PM

CAAC Civil Aviation Administration of China
VIP -- very important person
USA -- United State America
CCTV -- CCTV
BBC -- British Broadcasting Corporation
PRC -- people's Republic of China
UN -- United Nation
PM -- private message

RELATED INFORMATIONS

1. How to say a knife and fork
2. There is a fraction, the denominator plus 2 equals 2 / 5, and the denominator minus 3 equals 1 / 2. What is the sum of the numerator and denominator of this fraction? How to find the specific answer process
3. Why does the spaceship slow down when it approaches the speed of light? No, spaceship exists in physics and time exists in logic. Why does time change when a physical object moves close to the speed of light?
4. How long does it take for a man to be on a spaceship at the speed of light?
5. The spaceship flies at the speed of 200000 km. People send a beam of light on the spaceship. The light travels at the speed of light C in the spaceship. What is the speed of light measured by people on earth
6. If you sail in a spaceship with a speed close to the speed of light per hour, your life will be much longer than that of people on earth? If you sail in a spaceship whose speed is close to the speed of light per hour, your life will be much longer than that of people on earth. There is a potential field where the energy of matter will change with the change of speed. Therefore, the change and comparison of time is based on the speed of matter. This is why time is one of the elements of four-dimensional space?
7. After reading a popular science book, I have a problem that I don't quite understand. It's basically like this: if I start from the earth and fly in a spaceship at a speed close to the speed of light (the unit of light speed is c), (for example, to fly to Pluto, you need to stay in a spacecraft for more than ten years to get there), and you think it has been more than ten years since you started, but at this time, people on earth have been more than twenty years or thirty years. Why? (I don't know if it's wrong, but I can't understand these time problems.)
8. Light on a spaceship traveling at the speed of light If a forward beam of light and a backward beam of light are emitted from a spaceship flying at the speed of light, what are their respective speeds? If the forward beam of light flies at the speed of light, then it is the same as the speed of the spaceship. In this way, people behind the spaceship can not see what they are doing in front of them?
9. How long does it take for an airplane (airliner) to arrive from the earth to the moon?
10. Do objects have the same mass on earth, moon and spaceship
11. In English, for example, adjectives modify nouns, what words modify what words, what must be followed by, who can teach me these knowledge points? These belong to grammar problems, or need daily learning accumulation?
12. In △ ABC, ab = 13, AC = 15, high ad = 12, then the length of BC is () A. 14b. 14 or 4C. 8D. 4 or 8
13. English translation 1. We have been waiting for him all morning 2. How long has it rained? 3. How long has she been teaching English? 4. She has been writing this book since last week 5. He hasn't been working here all these years 6. What newspaper are you reading recently? 7. The old man worked in the park for two hours
14. Given that ABC is not equal to 0, the square of AX + BX + C = 0, the square of BX + CX + a = 0, the square of Cx + ax + B = 0, find its common root
15. Given the position of the number A.B.C on the number axis Moreover, the distance from B. C to the origin is equal, and | A-B | - | - a | - | B + C is simplified| Picture | - | - - | - | - | - | - | - → a b 0 c
16. It is known that the function f (x) is an odd function over [- 1,1] and monotonically decreases over the interval [- 1,0] If f (2m-3) + F (1-m) > 0, find the value range of real number M
17. What is the sum of a number added, subtracted, and divided equal to 8.6?
18. The radius of the earth's orbit is often used in astronomy as a unit of length, called astronomical unit, to measure the distance between celestial bodies and the sun in the solar system
19. Did Maxwell calculate the speed of light? I don't believe that one can calculate the speed of light by pure theory. Relativity only says that the speed of light is constant
20. Do I reach the speed of light like this? Everyone knows that no one can reach the speed of light, but if I move to the left at half the speed of light and you move to the right at the same speed, then I'm not sure if you have reached the speed of light