教育研究的两个层次具体表现为_______________、_______________、_______________、和_______________四种不同的研究水平。
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Our payment terms (付款方式)are ___ , irrevocable letter of credit for the full invoice value.( )
时间:2020-06-17
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As it involves only a small ___ , we hope you will have no difficulty on promotion.( )
时间:2020-06-17
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This is our best price, ____ which we have concluded many orders with other buyers in your city.( )
时间:2020-06-17
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教育科学研究是指运用科学的_______________,遵循一定的_______________,通过对教育现象与事实的解释、预测和控制,探索_______________的一种认识活动。
时间:2020-06-17
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