If you must define the symbols in the figure legend,()is usually not recommended.
A. open triangles
B. emotions symbols
C. closed circles
D. closed squares
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The authors can always make some changes in their digital photographs.
1.检验调查问卷质量，要对问卷信度检验，信度的要求一般要大于______
因子分析要对KMO检验，检验结果的要求一般要大于______
当统计检验结果用**表示标注时，说明检验的显著性水平为小于______
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