Course Introduction：The method of unhiding all columns at one time in Excel is as follows: 1. Press Ctrl A to select all table contents, move the mouse to any column title and right-click to select "Unhide" to restore all hidden columns at once; 2. Click the "Format" button in the "Start" tab of the top menu, select "Hide and Unhide" in the drop-down menu and then click "Unhide Columns", which is suitable for users who are not familiar with the shortcut keys; 3. Manually observe the fault positioning of hidden columns between column titles, and right-click to unhide one by one, which is suitable for local troubleshooting and processing. These three methods can be selected according to usage habits, the first of which is the most efficient.
2025-07-17 comment 0 659
Course Introduction：There are three ways to adjust the resolution of Windows 11 screen: 1. Adjust through the "Settings" menu, open the "Start Menu" and select "Settings", enter the "System"-"Display" and find the "Show Resolution" drop-down menu, and select the recommended options; 2. Right-click the desktop to quickly adjust, click "Show Settings" and then operate the same as above; 3. Troubleshoot the reasons when encountering problems, such as updating the graphics card driver, checking the connection cable, confirming the monitor support range, etc. Each approach corresponds to different scenarios, ensuring resolution is adapted to the display for the best visual effect.
2025-07-09 comment 0 375
Course Introduction：Customizing the GitLab interface in Debian can be done in the following ways: Change the interface language to Chinese and log in to GitLab and enter settings: Open the browser and access the URL of GitLab. Log in with your administrator account. Click on the user avatar in the upper right corner and select "Settings". Modify the user interface language: Find "Preferences" in the left navigation bar. Select "Chinese from the "UserInterface" drop-down menu
2025-04-13 comment 0 1134
Course Introduction：Customize the GitLab interface on CentOS system to easily create a personalized workspace! The following steps will guide you how to change the interface language and customize the homepage style: Interface language settings Log in to GitLab: Access your GitLab server address in your browser and log in. Access settings: Click on your user avatar in the upper right corner and select "Settings". Go to User Interface Settings: In the menu on the left, find "Preferences" and select "UserInterface". Select language: In the "User Interface" drop-down menu, select "Chinese(Simplified)",
2025-05-19 comment 0 459
Course Introduction：There is no startup sound when Windows 11 is powered on by default, but if you enable the relevant settings or use an earlier version of the system upgraded, you may hear the startup sound effect. If you want to turn off or change this sound, the operation is not complicated. Find the "System Sound" setting First, you need to enter the sound settings section of the system. Right-click the volume icon in the lower right corner of the taskbar and select "Sound Settings". Then in the window that opens, scroll down and click "Sound Settings Advanced Controls", and then you will see a link to "Sound Control Panel" and click it. Here you will see a drop-down menu called "Sound Scheme", which lists the sounds corresponding to various system events. Find the "Windows boot" item, its silent
2025-06-28 comment 0 840
Course Elementary 13776
Course Introduction：Scala Tutorial Scala is a multi-paradigm programming language, designed to integrate various features of object-oriented programming and functional programming.
Course Elementary 82287
Course Introduction："CSS Online Manual" is the official CSS online reference manual. This CSS online development manual contains various CSS properties, definitions, usage methods, example operations, etc. It is an indispensable online query manual for WEB programming learners and developers! CSS: Cascading Style Sheets (English full name: Cascading Style Sheets) is an application used to express HTML (Standard Universal Markup Language).
Course Elementary 13146
Course Introduction：SVG is a markup language for vector graphics in HTML5. It maintains powerful drawing capabilities and at the same time has a very high-end interface to operate graphics by directly operating Dom nodes. This "SVG Tutorial" is intended to allow students to master the SVG language and some of its corresponding APIs, combined with the knowledge of 2D drawing, so that students can render and control complex graphics on the page.
Course Elementary 24592
Course Introduction：In the "AngularJS Chinese Reference Manual", AngularJS extends HTML with new attributes and expressions. AngularJS can build a single page application (SPAs: Single Page Applications). AngularJS is very easy to learn.
Course Elementary 27451
Course Introduction：Go is a new language, a concurrent, garbage-collected, fast-compiled language. It can compile a large Go program in a few seconds on a single computer. Go provides a model for software construction that makes dependency analysis easier and avoids most C-style include files and library headers. Go is a statically typed language, and its type system has no hierarchy. Therefore users do not need to spend time defining relationships between types, which feels more lightweight than typical object-oriented languages. Go is a completely garbage-collected language and provides basic support for concurrent execution and communication. By its design, Go is intended to provide a method for constructing system software on multi-core machines.
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