This paper studied the causes of bursting of stop valve by the methods of visual inspection, metallographical examination, chemical analysis and mechanical property test.
采用宏微观检验、化学成分分析及力学性能测试方法对截止阀阀体爆裂原因进行了分析。
This paper is designed to test whether the multiple-choice items in one college English final examination paper are reliable and valid on the basis of item analysis.
通过对我院一份英语期末考卷的项目分析，检测其中客观选择题的信度和效度，并指出在设计考卷客观题方面应注意的问题及改进方法。
Based on the analysis of the main problems involved in the programming of computer operating exam system of Sichuan computer graded examination. Some solution is provided in this paper.
针对四川省高校计算机等级考试上机考试系统中存在的服务器与客户机的连接方式选择、试卷内容发送、考试计时等主要问题，提出了解决方法。
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