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简述水闸运用前的检查内容有哪些。

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Section D.Thank you very much for meeting with me yesterday about our project, I really appreciate your help. And we'll take your suggestions into consideration when we _ (20) for the next year. It was _ (21) to have someone like you who has had experience with similar projects. I appreciate your taking the time out of your busy schedule to __ (22) me. I'll _ (23) to send you a follow-up when this project is completed. Please let me know if I can_____ (24) the favor and when.