Possibly the best method for researching an appropriate Linux distribution is trial and error, as distros are easy to download and try on LiveCDs or USB flash drives (UFDs).

研究适当Linux发行版的最佳方法可能是试用和错误，因为发行版可以轻松下载并在LiveCD或US b闪存盘(ufd)中试用。

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The difference is that if you could use abstract methods in this case you'd see a "Class must implement method" error when you try to run your code (any code), and your IDE would highlight the error.

不同的是，如果你可以使用抽象方法在这种情况下，你会看到一个“类必须实现的方法”的错误时，你试图运行你的代码(任何代码)，以及你的IDE会突出显示错误。

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Experience method, low of causality, inductive method and try-and-error method could be used in system analysis.

主张运用经验法、因果法、归纳法、尝试法来进行系统分析。

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