After the general election, the United States failed to see the dawn, and the cloud of death has become lower and lower. On December 7, the United States reported a total of more than 14.5 million new crown patients with more than 280,000 deaths. Among them, the number of deaths in a single day
Read MoreAccording to media reports, Fauci, director of the National Institute of Allergy and Infectious Diseases, revealed to the media that the current situation of the epidemic in the United States is not optimistic, and it has even become a little unstoppable. The medical system in some regions is
Read MoreWhen working, how do you ensure that you choose the right gloves? At present, the performance of disposable gloves is measured by thickness, and the measurement standard can even be accurate to millimeters. However, this measurement method is not the most accurate, because the thickness of
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