笔试部分都是英文的，题目记不太全了，有印象的放在这里供大家参考下，虽然外包公司往往被众人BS。
1. what's the diff between Windows and Linux?
2. what's an OS?
3. what's delegate? Give a sample.
4. what's abstract class? when you have to use abstract class?
5. what's interface?
6. assembly contains what? can an assembly distributed in multiple files?
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这是大概可以记住的几个。