结果：两组学生考试成绩的差别没有显著性差异（P>0.05），但PBL教学法班的学生查阅文献能力及综合分析判断能力明显提高。
Results:The exam score was of no significant difference between two classes(P>0.05). The ability of consulting reference and problem-solving skills significantly increased in students of PBL class.
钻头的工作情况可以根据综合录井资料分析判断，反映钻头磨损程度的主要特征参数有扭矩和钻时。
We can analyse and diagnose bit working state based on integrated logging data. The main characteristic parameters for bit wearing degree are torque and drilling time.
结果：综合检查手段、分析判断有效提高了菌阴肺结核的诊断率。
Results: Means a comprehensive inspection, analysis and effective to improve the diagnosis of culture negative tuberculosis rate.
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