الفهرس 
chapter 1Only 14 pages are availabe for public view
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Abstract
The aim of this study was to investigate the relationship between what students in the article acoustics and how they benefit from it in Ntgahm actual and taking into account the differences between the performance of students in the written tests of theory in acoustics and performance in tests oral speech, and explore the changing role of sex in the performance of students For each of the theoretical and practical levels.