系统菜单(System)--首选项 (Preferences)--首选应用程序(Preferred Applications) 在"邮件阅读器"标签下选择自定义，并输入
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它不知道每台机器上Word的路径，所以，也就无法知道Microsoft Word是不是处理. doc文件的首选应用程序。
It doesn't know the path to Word on each machine, and on top of that, it has no way of knowing if Microsoft Word is the preferred application for working with.doc files.
单机模式是许多嵌入式应用程序的首选模式。
Stand-alone is the preferred mode for many embedded applications.
通常，显式查询是一种最佳实践并且通常为首选，因为它将减少应用程序中出现微小错误的机会。
As usual, being explicit is a best practice and is generally preferred because it reduces the chances of subtle bugs appearing in your application.
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