Do female astronauts need to take contraceptive pills before takeoff? Why is this? How to solve physiological problems?
followintroductionIn 1961, Soviet astronautsGagarinBecoming the first human to enter space has ushered in a new era. For decades, many astronauts around the world have been able to enter space, but most of them are men,Female astronauts are rare...
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The call to shut down e-commerce is increasing? Why don't developed countries advocate for e-commerce "expansion"
With the rapid development of the Internet, domestic e-commerce has also made steady progress, and in recent years, it can be said that breakthroughs have been made. Domestic e-commerce platforms have sprung up like mushrooms...
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Is the air conditioning also getting stuck? Is it feasible for Japan to remove the production line of air conditioning compressors and replace them with domestic ones
Before reading this article, please click on "Follow" to facilitate your discussion and sharing, which brings you a different sense of participation. Thank you for your supportwriting|Xiao Su's worldviewedit|Xiao Su's worldviewprefaceJust recently,Panasonic Group of Japan stated thatTo integrate one's own brandMid to high-end air conditioning compressorsWithdrawal of production lines from China,Move back to Japan!Many people say that our air conditioningAre you also getting stuck in Japan's neck?Because of the air conditioningMid to high-end core technologyPreviously controlled by Japan, will the sudden evacuation now affect the use of air conditioning...
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20 years of home appliance sales, let me tell you these 6 points, they are all "magic mirrors" for ordinary families to buy refrigerators
After buying a refrigerator and seeing a variety of marketing advertisements, many friends nodded and didn't know how to choose.Because there are various types and brands of refrigerators on the market, with prices ranging from a few hundred yuan to several thousand yuan or even tens of thousands of yuan, everything is available...
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BOE Technology A: Net profit in the first half of the year is expected to decline 88% -89% year on year
[Global Network Technology Comprehensive Report] On July 14, BOE Technology A released its performance forecast. It is expected that the net profit in the first half of the year will be 700 million to 800 million yuan, down 88% -89% year on year...
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Why is it that 400 foreign pilots collectively switch jobs and do not want to return home?
Shocking news has spread that 400 foreign pilots have recently collectively switched jobs and are unwilling to return home. This incident has attracted widespread attention and speculation...
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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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Ming Zhai | Bill Gates Admits to Steal Windows System Development Technology? AI fraud
Scanning -The original video talked about climate change, COVID-19 Conspiracy theory, false information, Musk's acquisition of Twitter, the relationship between Gates and Epstein, the rise of artificial intelligence and other topics, but did not cover the profits of COVID-19 vaccine and the history of Microsoft.Event BackgroundRecently, a netizen on the WeChat video number released a video about Microsoft co-founder Bill Gates admitting to stealing the development technology of Windows operating system in a news interview, which was widely reprinted...
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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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Option is a good thing that most people really don't know how to use!
OverviewNullPoInterException, ChInese name:Null poInter exceptionNPE, also known as NPE, is one of the most common error anomalies In software systems.Long ago, the Google Guava project IntroducedOptionalNull poInter exceptionNullTo expect programmers to write code that is both neat and more readable...
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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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