Well, come to work, a small partner said his computer folder, inexplicably in the upper right corner of the blue arrow. Is this awkward? Is this folder shared or remotely controlled? Actually, this is not a big problem, hey, don't panic! Right click on the folder and select "Properties". Then click on the "Advanced" button. Looking at the two options "Compress content to save disk space" and "Encrypt content to protect data" are you selected? When you remove their check and make sure, the question "Do you want to apply this setting to subfolders and files" will pop up, just look at everyone's choice, want to let the blue arrow disappear completely or not in the main folder. Seeing it, the former chooses "yes", and the latter is natural. In this way, the odd arrow in the upper right corner is gone, and the partner with obsessive-compulsive disorder should be able to go down easily. General Purpose Rectifier Bridge
A bridge rectifier provides full-wave rectification from a two-wire AC input, resulting in lower cost and weight as compared to a rectifier with a 3-wire input from a transformer with a center-tapped secondary winding.
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