The Ministry of Communications announced that the content of the online car test was 80 points and above.

  Beijing Morning News (Reporter Zou Le) Yesterday, the Ministry of Transport announced the Outline of the National Public Subject Examination for Taxi Drivers’ Qualification and the Notice on Defining the License Form of Online Booking Taxi Service, which clarified the specific contents and methods of the online car driver examination and the certificate form of the "three certificates".

  According to the outline, the national public subject examination for taxi drivers’ qualification is subject to the national unified examination outline. The examination method is a national unified question bank, and the computer system is used to randomly select questions. The examination time is 60 minutes. There are 85 test questions, which are divided into true or false questions, single-choice questions and multiple-choice questions. Among them, there are 15 judgment questions, with 1 point for each question; 55 multiple-choice questions, 1 point for each question; 15 multiple-choice questions, 2 points for each question. The total score of the exam is 100 points, and 80 points or above are qualified. The test results will be announced within 10 days after the end of the test.

  The specific examination contents include mastering taxi related policies, laws and regulations; Master the knowledge of taxi safety operation; Understand the professional ethics of taxi drivers; Master taxi service standards; Familiar with other related knowledge of taxi operation. Among them, the examination content of "New Deal" accounts for the most, reaching 18 points. The content of "New Deal" includes national taxi policies, laws and regulations such as Guiding Opinions of General Office of the State Council on Deepening Reform and Promoting the Healthy Development of Taxi Industry, Regulations on the Management of Taxi Drivers’ Qualification, Interim Measures for the Management of Online Booking Taxi Management Service, Regulations on the Management of Cruise Taxi Management Service, and Measures for Evaluating the Credit of Taxi Service Quality.

  In addition, the Ministry of Transport also issued the Notice on Defining the License Form of Online Booking Taxi Service yesterday. The "Notice" stipulates the document styles of three certificates, namely, online booking taxi business license, online booking taxi transport license and online booking taxi driver’s license. Among them, the column of "Record of Online Booking Taxi Operators" shall be filled in by the corresponding online car platform company. For services provided by multiple platform companies, it shall be indicated separately and confirmed by the online car platform company.

  ■ Beijing

  The Municipal Transportation Commission initiated the examination investigation.

  The Beijing Morning Post reporter was informed that the Beijing Municipal Transportation Commission has launched a taxi network car test survey. At the end of last month, Zhou Zhengyu, director of the Municipal Transportation Commission, led a team to investigate the taxi driver examination and licensing in this city. The research team first came to Beiqi Training School to inspect the taxi driver’s examination acceptance site, theoretical examination room and practical examination room in detail. Then take a bus to the examination center of the transportation administration, investigate the taxi driver’s certificate handling and theoretical examination room on the spot, and listen to the report of the relevant person in charge. The research team also came to the administrative examination and approval center of the Municipal Transportation Commission to learn more about the taxi business qualification certificate, vehicle operation certificate and driver passenger qualification certificate issuance and other related matters, and organized a symposium on related work.

  Previously, Beijing issued a draft of the detailed rules for the implementation of the network car. It is planned to stipulate that vehicles and drivers engaged in the operation of the network car in Beijing in the future must have "Beijing household registration", and private cars can apply to become network cars and pass the examination. However, at present, the new policy of Beijing network car has not been announced yet, and the time for the implementation of the exam has not been notified.

How did the whistle and brilliant colors of fireworks come about?

When Xiao Bian was very young, he liked to run to the balcony to watch fireworks every New Year. After a bang, a bright and colorful fireworks burst into the distant sky, gorgeous and beautiful.
All kinds of fireworks @Wikipedia
Therefore, Xiao Bian, who was young and ignorant at that time, couldn’t help wondering … Why did a small box on the ground look like that after being ignited? How on earth are fireworks designed and made in order to show such a brilliant effect?
The picture comes from the Internet.
There are many kinds of fireworks, and the fireworks seen in general TV programs, that is, the kind that flies to the sky with a bang and then explodes, are a special kind of fireworks called fireworks.
Fireworks @Wikipedia
Fireworks bloom can be roughly divided into two stages. The first stage is the launch of the fireworks bomb: with a bang, something on the ground flew into the sky. The second stage is probably the burst of fireworks, and a firework exploded in the sky. What happened in these two stages respectively?
The internal structure of a certain kind of fireworks is probably like this [1].
Fireworks structure @pyrouniverse.com
Hit the fireworks into the sky
When we lit the fuse (fast fuse), the fuse gave the friends time to evacuate and delayed the explosion. When the fuse burns to the propellant, ignite the propellant. Propellant is generally black powder discovered by the ancient alchemist in China. After the fireworks are lit, the sound of "bang" is the explosion of this thing. The main components of black powder are sulfur, charcoal and potassium nitrate, and the reaction formula of explosion is complicated. A typical chemical reaction equation looks like this (familiar with one sulfur, two nitrates and three carbons):
This explosion reaction produces a lot of heat and high-temperature gas, which is similar to the principle of rocket launch. The high-temperature gas produces huge thrust and pushes the shell into the sky. In the process of flying high into the air, we often hear the whistling sound, which is a sound effect of fireworks. It comes from a special thermal-acoustic coupling combustion-pulsating combustion.
Pulsating combustion
Pulsating combustion is a special unstable combustion process, and the parameters such as temperature, pressure and airflow speed in the combustion zone will fluctuate periodically with time. In the process of industrial application of pulsating combustion, there will be a lot of noise radiated from the tail pipe of the burner [2]. This technology involves many nonlinear processes of thermo-acoustic coupling, large amplitude acoustic wave effect and so on, which is very complicated, so there is no relevant theory at present [3].
But the fact that there is no relevant theory doesn’t mean that we are not here or can’t use it.
People engaged in fireworks production already know that in order to make fireworks produce this whistling sound, it is necessary to use a special kind of combustion product-flute agent. Oxidizers (potassium perchlorate and potassium chlorate) and flute agents (mainly derivatives of benzene) are mixed and packed into paper or plastic tubes, and pulsating combustion will occur after ignition, resulting in crisp flute sound [4].
@ References [4]
This pulsating combustion causes thousands of violent vibrations of air every second, releasing high-frequency sound waves. Therefore, the combustion chamber loaded with flute agent and oxidant acts as a propeller, and at the same time, it also emits a sharp whistle-like sound.
In addition to the fireworks launched, there is also a famous fireworks with sound. Xiaobian’s hometown likes to call him a monkey, which is this thing:
@bilibili-av8389766
The ingredients of the propellant used in this kind of thing are potassium perchlorate and potassium hydrogen phthalate. And this potassium hydrogen phthalate, as can be seen from the above table, is also a flute agent (although the sound frequency emitted by combustion is unstable, it still produces a sound pressure of 100dB).
Burst out a firework.
After the propellant is detonated, the delay lead is ignited and the time is started. By the time the shell flies to high altitude and needs to be ignited, the delay lead is almost burned out. So the explosive was detonated and the stars were blown all over the sky. The figure of the fireworks explosion depends on the position of the stars in the shell. If the medicine makes the fireworks explode into a specific shape, it is necessary to design the arrangement of the stars in the fireworks subtly [5].
What the hell is this star? It is the most crucial and mysterious part of the whole fireworks display ~
Its main components are magnesium powder, potassium perchlorate and metal salt or metal powder [6].
Star Composition @ Paperclip-How to Make Explosive Fireworks
After the star is ignited, magnesium powder as reducing agent and potassium perchlorate as oxidizing agent burn violently, giving off a lot of light and heat (but not gas) and becoming the shining things in the fireworks.
But how did the colors of fireworks come from? This involves an important phenomenon related to physics and chemistry-flame reaction.
flame reaction
Simple metals or their compounds will evaporate into individual particles at extremely high temperature, and only individual particles can exhibit flame reaction. (There is no flame reaction in bulk solid samples, because the luminescence of bulk materials is mainly related to the movement of electrons in the materials, and there are various electrons in different movement states in bulk solid samples, so the spectrum of light emitted by bulk materials is very wide and does not present a relatively single color [7]). However, the free metal simple substance or metal ion in the flame will be excited to an excited state with higher energy at high temperature.
However, the excited atom at higher energy is unstable, and it will always transition to the most stable ground state with the lowest energy. In this process, the photon energy (hν) emitted by the atom is exactly equal to the energy difference between the excited state (energy E2) and the ground state (energy E1).
@Wikipedia
The wavelength of photons emitted in this way does not depend on the temperature of the evaporated metal particles, but only on the energy difference between the two energy levels where the transition occurs, and this energy difference is only related to the kind of atoms.
Therefore, different metal ions will have different colors. In this way, we can use various metals and metal compounds to produce various colors.
The metals or metal compounds in the stars, heated by the huge heat released by the burning of magnesium and potassium perchlorate, emit their own light through the flame reaction.
The color of flame reaction [8]
tag
It’s been more than a dozen Spring Festival from a silly child who knows nothing to today’s Xiaobian. Looking at the manuscript, I can’t help but think of myself skipping in front of fireworks more than ten years ago. Time flies, the sun and the moon fly. Although it is more and more difficult to see the fireworks bloom, their physical and chemical principles are becoming more and more clear.
Anyway, it’s the Spring Festival. While enjoying the beautiful and gorgeous fireworks, don’t miss the same beautiful and gorgeous physical and chemical principles behind the fireworks ~
Ps: Places where fireworks and firecrackers are prohibited should strictly abide by the regulations.
reference data
[1] https://steemit.com/science/@xenvy04/the-chemistry-of-fireworks-happy-fourth-of-july
Shao Dongwei, Wang Junfa, Liu Yuanjun, et al. Research and application of pulsating combustion technology [J]. Modern Agriculture, 2009 (7):41-43.
Wu Yunfei, Deng Kai, Shen Zhongliang, et al. Development of pulsating combustion technology [J]. Light Industry Machinery, 2013 (1):106-110.
Lan Haikang. The relationship between flute agent and chemical structure [J]. Fireworks Technology and Market, 1994(1):20-21.
[5] https://zhuanlan.zhihu.com/p/86164747
[6] How to make explosive fireworks
[7] https://en.wikipedia.org/wiki/Flame_test
[8] https://www.compoundchem.com/2013/12/30/the-chemistry-of-fireworks/
Editor: Luna
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Come to Hongze on New Year’s Day! Wonderful holiday, full of ceremony!

New Year’s Day holiday lasts three days in a row.

Hongze scenic spots open a sea of people to travel.

Come and have a look at the first-hand scene map with Xiaohong.

Huaian fangte dongfang yuxiao

During the New Year’s Day holiday, Huai ‘an Fangte launched the "Fangte Ice and Snow Festival". The rejuvenated stage and dreamy winter elves made every visitor feel full of surprises. The park is full of songs and dances, full of energy, and people come and go in various indoor and outdoor projects, with laughter.

Just tonight, Huai ‘an Fangte will accompany us to open a New Year’s Eve carnival full of ceremony.

Mysterious band surprises to sing, New Year’s Eve gift hits hard, drone lineup is super doubled, two fireworks light up the starry sky, bears haunt the sky for the first time, 20+ performing arts are upgraded, dreams come back to the Red Chamber, winter bonfires, and holiday surprises hit … There are too many wonderful things to watch, don’t wait, come and join this New Year’s Eve party!

Hongze Lake Guyan Scenic Area

On December 30th, our district held a healthy Hongze 10,000-person walking activity to welcome the new year. With the sound of the starting gun, the district leaders and more than 10,000 participants started to walk along the ancient weir of Hongze Lake with beautiful scenery. The whole journey was 4.6 kilometers. Everyone was enthusiastic and energetic. They found fun from the exercise, relaxed their body and mind, and showed a positive spirit.

The super "Meng" team is finally here! The Xiaotie Niu Meng Chong Paradise in the ancient weir scenic spot of Hongze Lake is very lively. On this day, adults and children have turned into little detectives, actively looking for clues on the treasure map, punching in and taking pictures, and grabbing the big treasure of snacks.

Or cool or cute mecha show clown interaction also attracted a large number of audience enthusiastic onlookers, everyone was immersed in a happy and peaceful atmosphere.

Unpowered play facilities have become a paradise for children to have fun, and laughter is constant.

The New Year’s Day running in the Year of the Dragon will start in 2024. Visitors who enter the park on New Year’s Day can also participate in running activities and win several tickets. Come on!

Baima lake eco-tourism scenic spot

This New Year’s Day holiday, everyone can enjoy the speed and passion in the go-karting sports center, Yuan Ye in the Alas Horse Paradise, and the cat and mouse in the Mishima Adventures … Come and enjoy the festive atmosphere of the festival ~

The excitement continues.

New year’s day this year

Just come to Hongze. Hey.

Original title: "Come to Hongze on New Year’s Day! Wonderful holiday, full of ceremony! 》

Read the original text

Today’s football recommendation analysis score forecast Bologna VS Lazio La Palmas VS Atletico Madrid

In the 11th round of Italian first-class football league, Bologna played against Lazio at home. Bologna’s scoring efficiency is good this season, but there are many draws. In the last round, Sassuolo was tied, and all the away games were tied this season. Bologna has been unbeaten in the last 9 games, with 3 wins and 6 draws, and all three victories were won at home. Lazio beat Fiorentina 1-0 in the league on Tuesday morning, and Inmobile scored a 90-minute penalty to help the Biancocelesti score all three points. At present, Lazio has won three consecutive victories in the league, while 2 wins and 3 losses in the away game, and defeated Sassuolo as a guest to end the two-game losing streak in the away game. This season, the Biancocelesti’s attack is average, with only 13 goals scored in 10 rounds and 12 goals conceded.

Lazio won 1 win and 1 draw against Bologna last season and remained unbeaten. However, in four consecutive seasons, Lazio only scored 2 draws and 2 losses without winning, and even failed to score in the last three games. The data of this game is insufficient for Lazio’s support. After all, as a traditional strong team in the league, the tie is not easy to overestimate when its reputation and status are dominant.

Therefore, the home team, Boluo, is always in Asia, and it is expected that the match will be more exciting than the match 1 midfielder. The right pair is in charge. The performance in the field is stable and has the strength advantage, while Lazio needs to show better performance in the away game to continue its unbeaten record.

Las palmas beat Manakol 3-0 in the last round and won two consecutive victories, in good shape. The team has a strong offensive ability, scoring only 9 goals in the past 5 rounds, but the defensive quality has improved, losing 4 goals in the past 5 rounds. This season, it has achieved 4 wins, 2 draws and 5 losses, ranking 10th in the league. Sandro ramirez, Fabio Gonzá lez and others were plagued by injuries or missed the game. It must be difficult for this field to face the former bitter Atletico Madrid.

Atletico Madrid beat Aravis 2-1 in the last round, and the team’s morale is like a rainbow. So far this season, it has achieved 8 wins, 1 draw and 1 loss, and its performance is excellent, ranking third in the league. In the last five rounds, he scored a total of 12 goals, averaging 2.4 goals per game. The quality of the team’s defense is very high, and he lost 6 goals in the past five rounds. French striker Gleizman scored 7 goals, and Morata scored 6 goals, which was the main scorer of the team. At present, Victor vitolo, Depe, Mandawa, etc. in the team are plagued by injuries or absent from the game. Atletico’s players can always adapt to different competition environments and play well. Their tactical flexibility and adaptability enable them to always have an advantage in away games.

To sum up, I think Atletico Madrid will win on the road. Although we know that the away game is full of challenges, Atletico’s strength, experience and tactical flexibility all indicate that they will win this victory. I believe they will show their advantages in the competition and finally win.