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问题 填空题

根据价值规律的要求，商品交换应以__________为基础实行等价交换。

答案

参考答案：价值

选择题
---The boy is tall enough _________ his age.
---Yes, I was much ________ when I was his age.
A．to, tallerB．at, tallerC．at, shorterD．for, shorter
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单项选择题

板料厚度（）时，可以在常温下冷弯曲。

A、≤5mm

B、≤8mm

C、≤10mm

D、≤4mm
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