教育研究与其他科学研究一样,由_______________、_____________和_______________三个基本要素组成。
现象与客观事实、科学理论、方法和技术
暂无解析
产生感生电动势的非静电力是感生电场对电荷的作用力,产生动生电动势的非静电力是()
Attheendoftheconference,allthe_(participate)wereaskedtofilloutaquestiolmaire
Therediscoveryofthisspeciesofbirdsisoneofthemost___(ordinary)scientificfindingsinrecentyears.
Peopletodayarehighlyconcernedaboutthequalityoftheairthey___(breath).
InAugust1977,asatellitetogatherdataaboutthe10millionblackholeswhicharethoughttobeintheMilkyWay.