Teaching teaches students not only theoretical knowledge but the methods of learning so that they may converse passive study into active study and achieve good result.
Based on the result of Phi-Correlation Analysis, this paper finds the significant converse correlation relationship between diversified strategies and firm performance.
基于觊相关分析结果，研究发现多元化与绩效之间存在显著负相关关系。
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The techniques of the postponed spectrum and generalized converse to respond in TEM are discussed in detail. The numerical values of some examples and the result of the program operation are given.