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先分后总法菜点成本的计算适用于()的菜点成本的计算 ["单件制作","成批产品","热菜","冷菜"]
谷物中含量最高的营养成分是() ["蛋白质","淀粉","维生素","水"]
在下列哪项情况下,梁斜截面宜设置弯起钢筋()。 ["10mm","15mm","20mm","25mm"]
简述我国著作权法规定的合理使用的条件?