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理想运放具有两个重要的特点是()
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常用的正弦波振荡电路包括()
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浏览器不支持音频听下面一段对话，完成填空。Steward: ______ . May I come in ?Guest: Of course. Come in, please.Steward: I am your ______ . Welcome to our cruise ship. Are you ______ with your room?Guest: It is wonderful.Steward: So can I show you how to use the "______ "?Guest: OK. Thanks.Steward: Each day, after my cleaning of your room, I will leave a today here. On the today, it clearly shows the location, the time and the performance of the cruise entertainment for each day. Thus you can choose any item you ______ each day during the cruise tour.Guest: Are all the items ______ ?Steward: Most of them are free, such as the ______ , the sports show and some performance, but some will be paid by yourself voluntarily. Excursion definitely will be charged. You can see the ______ on today, for whether the item needs to be paid has been marked.Guest: I see. And I will read it one by one. Each day, are the items the ______ ?Steward: Of course not. Every day the items will have some changes so that you can experience different cruise life.Guest: Fantastic. Thank you very much.Steward: My ______ .
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