试题与答案

冲击试验的标准式样的厚度为()A、30mmB、10mmC、25mmD、20mm

题型:单项选择题

题目:

冲击试验的标准式样的厚度为()

A、30mm

B、10mm

C、25mm

D、20mm

答案:

参考答案:B

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