题目内容

根据以下资料回答 6~10 题
第 6 题 ()证券公司()普通股

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根据以下资料回答 51~55 题
第 51 题 ()进货价格()出厂价

What does Prof. Lee need to do if he wants to give some talks?
He is required to __________ them in advance.

()电气系统 ()单项驱动

What is required to mail to Tianhe together with their resumes?
_______________________.

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