At the current level of humanity, what considerations are needed to build a 10000 meter tall building?
Chicago Family Insurance BuildingIn 1885, the world's first skyscraper--Family Insurance Company BuildingBuilt in Chicago, USA, its overall architecture was only10 story building42 meters high.Burj Khalifa TowerNow only a hundred years old, completed in Dubai in 2010Burj Khalifa TowerThe height has already reached828 meters...
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Scientists have found that the levels of toxic metals and trace elements in fruit juices and soft drinks are increasing
A recent study conducted by Tulane University found that the content of toxic metals in some popular drinks exceeded the federal standard for safe drinking water. The investigation tested 60 beverages and found that the content of a certain toxic metal in 5 of them was higher than the safety value specified by federal standards...
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Shenzhou 15 010203 is in good condition! Take a look at the high-definition large picture of the scene first
Source: Human spaceflight HornLarge high-definition picture of Shenzhou 15 returning to the scene...
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New Technical Director: Discovered who is using delete to delete data and directly fired!
delete Mysql MySQL delete MySQL MySQL MySQL MySQL MySQL InnoDBMyISAMMemory BMySQL MySQL 16KBMySQL MySQL B B MySQL MySQL MySQL ACID MySQL MySQL MySQL MySQL deletetruncatedrop drop > truncate >> DELETEDELETEDELETE from TABLE_NAME where xxxDELETE DMLtrigger InnoDB DELETEmysql delete ** DELETErollback segementcommit;delete from table_name,MyISAM InnoDB ;delete from table_name where xxx , InnoDBMyISAM;delete optimize table table_name InnoDBMyISAM deleteoptimize table SQLMcsjdemodemo2select concat(round(sum(DATA_LENGTH/1024/1024),2),'M') as table_size from information_schema.tables where table_schema='csjdemo' AND table_name='demo2';Sizeoptimize table demo2sizedelete redoundo rollback) dropDrop table TablenameDDLTruncate drop table table_name InnoDB MyISAM; drop (constrain)(trigger)(index); /, invalid drop deletetruncatedroptruncateDDL rollback segment trigger truncate table table_name InnoDBMyISAM truncate tabledrop table creat,create table drop table;truncate auto_incrementMyISAMtruncateauto_increment1deleteauto_incrementInnoDBtruncateauto_increment1deleteauto_incrementdeleteMySQLauto_increment1InnoDB auto_incrementdelete auto_increment1auto_increment SELECT 1+MAX(ai_col) FROM t truncateDELETE DELETEDELETEInnoDBdeletedeleteInnoDBInnoDBtablespace > segmentinode > Extent >PageInnodbsegmentextentsegmentFREE_PAGE32page32page1extent1extent32MBextent32MB4extentMySQLdata pageMySQL CrashInnodbInnoDBUndo****MySQLinformation_schema****innodb_file_per_table=1table_name...
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Make American fighter jets unable to fly! China starts a counterattack, foreign media: this is more serious than chips
followThe hostility of the United States towards China has been ongoing for many years, only because the United States has always believed that China's economic development will inevitably affect its interests, and even threaten its hegemonic position. However, because China has always adhered to an independent and independent development path, although it needs to learn from advanced countries such as the United States in many fields, its dependence is not high...
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An explosion occurred during the test run of the new second stage solid rocket engine of Japan's "Epsilon" rocket
(Observer Network News) According to the report of the NHK (NHK) on July 14, the Japan JAXA (JAXA) said that at 9:00 a.m...
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Attention to those who pay with WeChat Pay! There is a big difference between 'I sweep you' and 'you sweep me'. Don't make any mistakes again
In the digital age, especially mobile payments such as WeChat have become commonly used payment methods in our daily lives. It has brought us a lot of convenience, but there are also some risks and hidden dangers...
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How powerful is the Baihetan Dam that China spent 180 billion yuan to build? Fill West Lake with water in 6 minutes
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The sales of air frying pan dropped precipitously, with several major shortcomings outstanding. Is there a way out for small household appliances?
followThe air frying pan was all the rage for a time, and was once called the "God frying pan" by frying lovers. However, the air frying pan, which has sprung up like mushrooms, has suffered Waterloo this year...
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Why are people who set up floor stalls most afraid of others putting their phones on scales? Thanks to colleagues sharing secrets!
Why are people who set up floor stalls most afraid of others putting their phones on scales? Thanks to colleagues sharing secrets! As the weather gradually turns hot, many friends have noticed that there are more and more street vendors outside, especially fruits and vegetables. As these small vendors sell in large quantities, the items on the street vendors are much cheaper than those in the store...
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'Leisure Fish' conceals erotic chatting and paid likes Staff: The platform cannot monitor private chats, and if users report it, it will be removed from the shelves for processing
Poster reporter Li Zijiang reportsRecently, the news of "second-hand trading platforms selling children" has hit the hot search, sparking a discussion among netizens about the topic of "what is being sold on the Xianyu app, a second-hand trading platform involved in the matter".The poster news reporter noticed that the "products" traded on the Xianyu app involve idle items, game training, internet technology, tourism strategies, and other fields, but there are also hidden services such as pornographic chat and paid likes from the navy...
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Water Drops has been listed in the United States, and Shen Peng stated that Water Drops has never been a charitable organization
#Headline article development plan # Nurturing water drop fundraising has been launched in the United States, but it has slapped us poor in the face. Who is it sucking blood from?In recent years, help seeking information on social media has frequently appeared, and people who click on it have found that it is a serious illness call for help message initiated by the Water Drops public platform...
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