优化组合库结构，全面考虑出题意想和出题原则，使用均匀分布的随即试卷生成算法。
Methods: this exam paper generation algorithm uses the random generating algorithm with uniform distribution and based on the principle of exam and framework of package library.
优化组合库结构，全面考虑出题意想和出题原则，使用均匀分布的随即试卷生成算法。
Methods: this exam paper generation algorithm uses the random generating algorithm with uniform distribution and based on the principle of exam and framework of package library.
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