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A | A massive explosion has hit the Hoover Dam in Nevada, with fire and plumes of black smoke seen in a video making the rounds online.,The smoke is apparently rising from the turbine house on the Arizona side of the Colorado River, at the foot of the 726-foot tall dam. The exact cause and circumstances were not immediately known.,NOW - Explosion at Hoover Dam in Nevada, USA.pic.twitter.com/ijdVtMNpND— Disclose.tv (@disclosetv) July 19, 2022,According to the US Bureau of Reclamation (USBR), the fire at the Hoover Dam caused no injuries to either visitors or employees, with power still being generated from the powerhouse. The bureau pointed out that it is still investigating the cause of the fire and will provide additional updates as they become available.,Earlier in the day, the city of Boulder announced that Boulder City Fire Department personnel arrived at the Hoover Dam in the US state of Nevada amid a reported explosion and fire there. The city later said via social media that the fire had been extinguished before the Boulder City Fire Department arrived at the scene.,The Hoover Dam is in the Black Canyon of the Colorado River, on the border between the states of Nevada and Arizona. The dam’s generators provide power for public and private utilities in Nevada, Arizona, and California.。

B | 德国、韩国和日本的占比分别为
22%、21%和18%。
C |
采取加征关税减少竞争的方法来保护电动汽车,只会让美国汽车制造商进步缓慢。而且美国现在严重依赖中国生产的电池,加征关税只会使得整车成本更贵,美国想买电动车的老百姓就只能支付更高价格了。在海外市场,中国电动车都可以凭借价格和技术取胜。美国车将一步步被边缘化,美国新能源产业会越来越落后。2020年大选,拜登猛烈抨击特朗普向中国3000亿美元进口商品的征税,严重伤害了美国,因为95%以上的关税都是由美国企业和家庭承担的。但拜登上任后,继承了这些关税,目的就是遏制中国的发展。而这一次加税主要目的是讨好摇摆州的选民。最新民调显示拜登在六个摇摆州的五个都落后特朗普。但是特朗普上台后,大概率会向所有国家加征关税,而且主要是针对中国。这几年贸易战打下来,美国经济学家都一致反对,新研究显示过去中美贸易顺畅时,美国家庭和企业都直接受惠,贸易战让大家直接受伤。即使是过去声称中国商品造成美国制造业工人失业的经济学家,也完全改变了态度。拜登加征关税的行为,也引来了IMF发言人Julie Kozack的批评。她表示,美国针对中国的贸易限制措施可能会扭曲贸易和投资,使得供应链碎片化并引发报复行动。她说:“这种碎片化可能会让全球经济付出高昂的代价。”IMF确定2023年全球贸易限制约为3000项,高于2019年的1000项,在地缘政治集团严重分裂的最坏情况下,这可能会使全球经济产出减少约7%,相当于减少了日本和德国GDP的总和。
D |
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