题目内容

4.工业纯铝的铝的百分含量≥99.85%。

A. 对
B. 错

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5.粉末冶金可用作滑动轴承材料。

A. 对
B. 错

幼儿文学作品的特点:内容上()、活动方式上()、价值上()。

幼儿园文学作品活动材料的选择有哪些要求?

traffic facilitate network protocol message transmission packet destinationTCP/IP consists of two . It uses packet switching tothe of messages. Packet switching divides into small unites called . Packets travel along the separately, based on the final and network and other network conditions.

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