题目内容
宰前休息的目的主要是降低兴奋度，消除应激反应
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应激反应会导致宰杀动物时放血不全。
当NPN三极管发射结电压小于0V；集电结电压小于0V时，三极管的工作状态是状态。
三极管具有放大作用，外部电压条件是正偏，反偏。
listen to the conversation again and complete the conversation.Engineer 1: The 1______ for the new office building looks a little high.Engineer 2: Yeah, but our budget might not 2_____ ______Engineer 1: Maybe we can make it cheaper. Let's look at some alternative 3______Engineer 2: Okay. What materials are you thinking about changing?Engineer 1: Well, the estimate included 4 _____ ______Engineer 2: What's wrong with that? Porcelain tiles 5_____ ______Engineer 1: But they're also really expensive. We could save money by getting 6_______ ________ instead.Engineer 2: That's a good idea.
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