但如果需要测试多个条件，例如我们假设所有条件都需要为 True 或 False ( AND )，或只有一个条件需要为 True 或 False ( OR )，或者如果想要检查某个条件是否不 ( NOT) 符合你的条件，这时该怎么做呢？ 这三个函数均可以单独使用，但它们更常见于与 IF 函数成对使用。

Defragment your Windows 10 PC. Windows 10. Optimizing your drives can help your PC run smoother and boot up faster. To optimize them: Select the search bar on the taskbar and enter defrag. Select Defragment and Optimize Drives. Select the disk drive you want to optimize. Select the Optimize button. Defragment your Windows 10 PC.

Find out how to submit a request for a refund for a purchase of digital Xbox content.

在 Outlook for iOS 或 Android 中登录到你的主要帐户。 在左侧导航窗格中点击 " 添加帐户 " 按钮, 然后点击 " 添加共享邮箱 "。 如果 Outlook Mobile 中有多个帐户, 请选择有权访问共享邮箱的帐户。

Some PCs can let Windows automatically adjust screen brightness based on the current lighting conditions. To find out if your PC supports this, select Settings > System > Display. Select Brightness, look for the Change brightness automatically when lighting changes check box, and then select it to use this feature. This automatic setting helps make sure your screen is readable wherever you go ...

Try these things to troubleshoot network connection issues in Windows 11. Make sure Wi-Fi is on. Select Start > Settings > Network & internet, then turn on Wi-Fi. Next, select More options ( >) next to Wi-Fi, then select Show available networks. If a network you expect to see appears in the list, select it, then select Connect .

Logga in på Hotmail ellerOutlook.com Om du vill logga in på Outlook.com eller Hotmail behöver du ditt användarnamn och lösenord för Microsoft-kontot.

Having a backup copy of your BitLocker recovery key helps to prevent serious issues later. It takes less than a minute to back up your key and this article will show you how.

Learn how to use Snipping Tool to capture a screenshot, or snip, of any object on your screen, and then annotate, save, or share the image.

按 Xbox 按钮 打开导航页，选择“档案和系统”>“设置”>“设备和连接”>“控制器和耳机”，然后选择要更新的控制器。. 在“Xbox One 无线控制器”屏幕上，选择“…”以查看控制器的固件版本。. 如果显示“更新”，请选择“固件版本”，然后按照提供的步骤 ...