简述称重法的概念、基本方法、优缺点、主要步骤和技术要点。 发布时间：2018-01-25 04:26 │ 来源：www.tikuol.com 题型：问答题 简答题 问题： 简述称重法的概念、基本方法、优缺点、主要步骤和技术要点。
题型：问答题 简答题 根据对话内容，将方框内符合对话情境的句子抄写在对话空白处，使对话恢复完整。选项中有两项是多余的。A: Hello! Could I speak to Mary, please?B: Certainly. 1 C: Hello, Mary here.A: Hi, Mary. 2 I'm going to have a party tomorrow. Can you come?C: 3 But I'm afraid I'm not very well.A: I'm sorry to hear that. 4 C: Don't worry. I'Il take good care of myself. I hope you will have a good time at the party.A: 5 Goodbye!C: Goodbye!Thank you very much.This is Bob.What's wrong?One moment please.Thank you for asking me to go to your party.You'd better stay in bed and have a good rest.Not at all.1. __________ 2. __________ 3. __________ 4. __________ 5. __________ 查看答案
题型：问答题 简答题 下面关于交换机的说法中，正确的是______。A．以太网交换机可以连接运行不同网络层协议的网络B．从工作原理上讲，以太网交换机是一种多端口网桥C．集线器是交换机一种类型D．通过交换机连接的一组工作站形成一个冲突域 查看答案