The computer exam system is widely applied in a great variety of exams, and in some degree the arithmetic for selecting examination questions determines the performance of the exam system.
计算机考试系统广泛地应用于各种考试，其中抽题算法的优劣在某种程度上决定了考试系统的性能。
Examination questions may be divided into various categories which have diverse functions according to different test standards.
根据不同的考核标准，试题可分成不同的种类，而不同的试题有不同的功能。
Examination questions may be divided into various categories which have diverse functions according to different test standards.
根据不同的考核标准，试题可分成不同的种类，而不同的试题有不同的功能。
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