半小时的时间，programer/developer 的职位，听口音那头应该是个老印。不太难，全
是基本概念。
1. multi-thread vs. multi-task
2. new vs. malloc()
3. pass by value vs. pass by reference vs. pass by pointer
4. what is dead lock
5. what is virtual memory
6. little endian vs. big endian
其它的记不起来了。
