影响人工、材料、机械价格变化有哪些因素?试举例说明。
①社会平均工资或价格水平;②生活消费指数;③市场的供求变化;④政府推行的有关政策或法律法规;⑤有关成本的变化;⑥运输方式或渠道;⑦单价的组成内容。
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上一篇:Passage 4Questions 16 to 20 are based on the following passageMy friend's ten-year-old daughter Julia has a new hobby. Like many of her school pals.she hopes to become a video blogger-a "vlogger". She's started to record clips of herself for
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