函数语法. 在你想要时使用. 批注. NPV 函数 (rate、value1、[value2]、...). 使用定期发生的现金流（例如每月或每年）确定净现值。 每个现金流（指定为 值）在期末发生。. 如果在第一个周期开始时有额外的现金流，则应将其添加到 NPV 函数返回的值中。

Windows 11引入了一项称为动态刷新速率 (DRR) 的新功能，该功能会根据你当时执行的操作自动调整刷新率。 这可以帮助你获得两全其美：当你需要游戏、浏览或墨迹书写时获得流畅的体验，当你不执行这些类型操作时，电池使用时间更长。

The languages that you use in a document can affect how your Office program checks and presents readability scores. If you set up Word to check the spelling and grammar of text in other languages, and a document contains text in multiple languages, Word displays readability statistics for text in the last language that was checked.

In addition to the standard limited warranty, you may have the option to purchase extended protection for your Surface (not available in all markets).. Checking your Surface device warranty. The easiest way to find the warranty type for your device and the coverage dates is in the Surface app.

Organize your ideas. Collections help you keep track of your ideas on the web - shopping, planning a trip, research, or just want to pick up where you left off.

Windows 10, version 21H2 update history; July 9, 2024—KB5040427 (OS Builds 19044.4651 and 19045.4651) June 11, 2024—KB5039211 (OS Builds 19044.4529 and 19045.4529)

Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows、Surface 等操作方法的文章、视频和培训。

从 Microsoft 获取免费的 Windows 主题，以个性化设置电脑的背景、颜色和声音。

Prevents Windows Update from performing driver installations and sending restart notifications; Helps achieve a more stable frame rate depending on the specific game and system

查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。