试题与答案

球墨铸铁的低温正火是把铸件加热到()-860℃。 A.700 B.750 C.780

题型:单项选择题

题目:

球墨铸铁的低温正火是把铸件加热到()-860℃。

A.700

B.750

C.780

D.820

答案:

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参考答案:①坚持全面的观点看问题(对立统一,一分为二)。农业科技创新要做到顶天立地。 ②坚持用发展的观点看问题。科技创新着眼于长远,超前部署农业前沿技术和机械研究。 ③矛盾的特殊性要求我们具体...

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