During the Renaissance, all scholars and artists abandoned medieval qualities and embraced modern values over night。()
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Economic hardship was undoubtedly the major cause for the Jacquerie uprising。()
The economy of the Byzantine Empire relied primarily on agriculture。()
Florence was the major centre of the High Renaissance Art at the early 16th century。()
锅炉通风的任务是什么?通风方式有哪几种?各有什么缺点?适用于什么场合?