题目内容

普通话韵母共有三十九个,数目比声母多,系统也比较复杂

A. 对
B. 错

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What would your ideal man/woman look like? What kind of person would they be? write a description,using language you have learned to help you.

You rencently bought a pair of jeans online.When they arrived, they were different from what they look like in the photograph. Write a letter of complaint, describing the problem and requesting action.

1.可采用哪些主要措施来提高夹具的整体精度?

2.影响夹具生产率的主要因素有哪些?

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