单选题:影响材料价格变动的因素中不正确的是(  )。

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题目内容:
影响材料价格变动的因素中不正确的是(  )。 A.市场供需变化
B.材料制造费用的变动直接带动材料质量的波动
C.流通环节的多少和材料供应体制也会影响材料价格
D.运输距离和运输方法的改变会影响材料运输费用的增减,从而也会影响材料价格

参考答案:【答案仅供学习,请勿对照自行用药等】
答案解析:

某工程水泥从两个地方供货,甲地供货200t,原价为240元/t;乙地供货300t,原价为250元/t。甲、乙运杂费分别为

某工程水泥从两个地方供货,甲地供货200t,原价为240元/t;乙地供货300t,原价为250元/t。甲、乙运杂费分别为20元/t、25元/t,运输损耗率均为2

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