试题与答案

Cr活化工艺第一步温度为()℃。 A.150 B.100 C.200 D.300

题型:单项选择题

题目:

Cr活化工艺第一步温度为()℃。

A.150

B.100

C.200

D.300

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D, E

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