问卷调查法的质量取决于
A.问卷回收过程的合理有效性
B.问卷本身的设计是否科学合理
C.被调查者文化水平的高低
D.被调查者填写问卷的诚意、兴趣和态度
E.问卷作答时是否做出具体的说明和指导
正确答案是BCD
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