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郑州眼睛近视散光有异物感
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发布时间: 2025-05-25 08:36:39北京青年报社官方账号
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  郑州眼睛近视散光有异物感   

(KGTV) — Disney's California Adventure Park will soon get a heaping dose of heroic fun, as a bit more about the Marvel-themed attractions coming to the parks was revealed this week.The "Global Avengers Initiative" will begin in March 2019, as Marvel heroes launch interconnected adventures at Disney's Anaheim, Hong Kong, and Paris theme parks.In Anaheim, Marvel fans will continue to help the Guardians of the Galaxy escape the Collector's Fortress at California Adventure, but soon also encounter adventures with Doctor Strange and Spider-Man in new attractions.RELATED:Disneyland releases first-look at Millennium Falcon at 'Star Wars' expansionDisneyland fans get new look at 'Tropical Hideaway' transformation"In California ... Tony Stark is retrofitting two of his father’s Stark Industries sites into new hubs for training and innovation. Through partnerships with S.H.I.E.L.D., Pym Technologies, Masters of the Mystic Arts and the new Worldwide Engineering Brigade, The Avengers and their allies will forge new global campuses to champion the next generation of heroes," the park says.Attractions featuring Ant-Man and Wasp, Iron Man, Captain Marvel, Black Panther, Captain America and others are also planned. The rollout piggybacks off of success with Marvel rides at Disneyland Hong Kong, where guests have already guests have already helped Earth's Mightiest Heroes battle Hydra in the "Iron Man Experience" and will soon also join Ant-Man and Wasp in "Ant-Man and The Wasp: Nano Battle!"The unveil is the latest news on the immersive superhero experience since California Adventure announced "A Bug's Land" would be replaced with the build out. 1665

  郑州眼睛近视散光有异物感   

(CNN) - Walmart is betting it can convince time-strapped customers to let strangers deliver groceries into their refrigerators while they're away from home.In a new service announced Friday, customers will be able to order groceries online, and then a Walmart worker will drive the food from a nearby store and deliver it to fridges in customers' kitchens or garages. It is Walmart's latest innovation in its grocery business, which makes up more than half of the company's annual sales.Walmart piloted its new service in New Jersey for five months and is ready to expand. The option will be available to more than a million customers this fall in Kansas City, Pittsburgh and Vero Beach, Florida. Walmart charges a fee for regular grocery delivery orders, and it did not disclose how much customers will have to pay for in-home delivery.Here's how the service works: Customers can purchase groceries online and select a delivery day. Walmart's employees will wear a camera when they enter customers' homes, allowing shoppers to watch the process live from their phones. Customers won't have to pay for a camera, but they will have to purchase a special door lock. Walmart did not say how much the lock will cost.Walmart believes it can entice shoppers with another convenient perk as part of its in-home delivery service: Later this year, customers will be able to leave their returns from Walmart's website on their counter and the employee will bring the item back to the store.In-home grocery delivery is not an entirely new concept for Walmart. The company partnered on another grocery delivery option in 2017 with smart-security company August, which makes locks that customers can monitor on their phones. That test included drivers from a crowd-sourced startup to deliver the items to customers. Amazon launched Key in 2017 that allows delivery drivers inside customers' homes when they're not around.The biggest barrier Walmart will face with its new service is that most people don't want strangers in their homes.Bart Stein, a Walmart executive who leads the in-home delivery service, acknowledged some customers during the pilot test were initially skeptical of the concept. But he said Walmart had been able to change opinions once customers tried it out."We really saw the tables turn after one delivery during our pilot testing around how people would trust a service like that," he said.One way Walmart is trying to alleviate customer concerns about the service: A biography with three fun facts about their delivery employees.Walmart workers who've been at the company for at least a year can apply for the in-home delivery position. If they get the job, they will go through training and the role will become their main responsibility.Walmart US e-commerce chief Marc Lore did not say how many employees will be diverted to these new delivery jobs, but it's another skilled position the retailer has created as new technology emerges. Walmart has also created 30,000 "personal shopper" jobs in stores who select groceries for customers' online pickup and delivery orders.Walmart's new delivery model comes out of its tech incubator, Store No. 8. The incubator develops companies, such as Jetblack, Walmart's chat-based shopping service in New York City, that help it stay ahead of future shopping trends.Related: How to solve the world's plastics problem — Bring back the milkman"We're taking it out of Store 8 and bringing it into the core business," Lore said at a presentation to reporters on Thursday. Lore emphasized that Walmart will be able to use its own store network, grocery supply chain and employees for the service. He argued that combination will help distinguish the offering from competitors.Walmart has added thousands of grocery pickup locations from stores, same-day home delivery options and introduced voice ordering for groceries off Google Assistant. 3899

  郑州眼睛近视散光有异物感   

(CNN) -- Scientists have discovered a "monster black hole" so massive that, in theory, it shouldn't exist.It's a stellar black hole — the type that forms after stars die, collapse, and explode. Researchers had previously believed that the size limit was no more than 20 times the mass of our sun because as these stars die, they lose most of their mass through explosions that expel matter and gas swept away by stellar winds.This theory has now been toppled by LB-1, the newly-discovered black hole. Located about 15,000 light years away, it has a mass 70 times greater than our sun, according to a press release from the Chinese Academy of Sciences.The findings were published by Chinese researchers in the journal Nature on Wednesday."Black holes of such mass should not even exist in our galaxy, according to most of the current models of stellar evolution," said Liu Jifeng, head of the team that made the discovery. "LB-1 is twice as massive as what we thought possible. Now theorists will have to take up the challenge of explaining its formation."Scientists are now scratching their heads at how LB-1 got so huge.The Chinese team has proposed a number of theories. LB-1's sheer size suggests that it "was not formed from the collapse of only one star," the study said -- instead, it could potentially be two smaller black holes orbiting each other.Another possibility is that it formed from a "fallback supernova." This is when a supernova -- the last stage of an exploding star -- ejects material during the explosion, which then falls back into the supernova, creating a black hole.This fallback formation is theoretically possible, but scientists have never been able to prove or observe it. If this is how LB-1 formed, then we may have "direct evidence for this process" for the first time, the study said.LB-1 is not the biggest black hole ever discovered -- but it may be the largest of its kind. There are several types of black holes, and stellar black holes like LB-1 are on the smaller side, according to NASA. Supermassive black holes are much bigger -- they can be billions of times the mass of our sun.Scientists believe supermassive black holes may be connected to the formation of galaxies, as they often exist at the center of the massive star systems -- but it is still not clear exactly how, or which form first.Stellar renaissanceStellar black holes are believed to be commonly scattered across the universe, but they are difficult to detect because they do not normally emit X-rays -- only doing so when they gobble up gas from a star that has ventured close enough. They are so elusive that scientists have only found, identified, and measured about two dozen stellar black holes, the press release said.The researchers at the Chinese Academy of Sciences tried a different approach. Instead of looking for X-rays emitted by black holes, the team looked for stars that were orbiting some invisible object, being pulled in by its gravity.Their efforts paid off -- they soon spotted a giant star eight times heavier than the sun, orbiting around what turned out to be LB-1."This discovery forces us to re-examine our models of how stellar-mass black holes form," said David Reitze, a physicist at the University of Florida. In May, Reitze's team made its own breakthrough discovery -- observing the never-before-seen collision of a neutron star and a black hole, which sent out ripples in space and time.These twin discoveries -- the collision, and now LB-1 -- indicate that scientists are reaching "a renaissance in our understanding of black hole astrophysics," said Reitze in the press release.There have been several other discoveries over the past year that have added to this renaissance. In October, researchers discovered what they believe to be a new type of black hole, smaller than the other kinds. And earlier this week, astronomers discovered a black hole that is actually helping baby stars grow instead of destroying them. 3971

  

(KGTV) - Is Spotify offering a new podcast just for dogs?Yes!"My Dog's Favorite Podcast" was created by animal experts.It features reassuring human voices, relaxing music, and ambient sounds.Spotify is also offering a range of playlists curated specifically for pets left alone all day. They're based on subscribers' musical tastes and pet species. In addition to dog and cat, the animal options include iguana, bird, and hamster. 440

  

(KGTV) - As Facebook faces an investigation by the Federal Trade Commission over its part in the Cambridge Analytica scandal, the company is acknowledging that phone records for some users may have been logged — perhaps without their knowledge.Facebook Messenger and Facebook Lite users on Android phones who uploaded contacts and chose the "opt-in" option had their calls and texts logged, according to the social media giant.To find out if you've given access to Facebook: 492

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