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【简答题】
将饱和 FeCl 3 溶液滴入沸水中,液体变为 ________ 色,得到的是 _________ ,用此分散系进行下列实验: (1) 将其装入 U 型,用石墨电极接通直流电,通电一段时间后,发现阴极附近的颜色 ________ ,这说明 ________________ ,这种现象称为 ____________ (2) 向其中加入饱和 (NH 4 ) 2 SO 4 溶液发生的现象是 ______________ ,原因是 ______________ (3) 向其中滴入过量稀硫酸,现象是 __________________________________________ ,其原因是 ______________________________________ (4) 提纯此分散系常用的方法是 _______________________
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【简答题】Being introduced invites you into the conversation and makes you feel like part of the group, which is why an introduction shows your respect for your guest. Attending an without being in...
【简答题】【背景】甲单位承担了一道路工程。由于该项目周边环境繁杂，施工干扰大，为了确保道路工程项目的施工质量，公司委派一名经验丰富的项目经理进行项目管理，并要求施工中加强现场质量控制。各相关部门按各自职责做好本职工作，确保质量控制的有效性。 【问题】 1.质量控制关键点的控制包括哪些方面? 2.现场质量检查控制的方法主要有哪些? 3.概括总结现场质量检查的内容。
【单选题】When scheduling meetings in southern cities, you'll find the business settings are ______.
A.
quite formal
B.
very casual
C.
very serious
【简答题】数字信号的特点是在时间和幅度上都是不(__)。
【判断题】In business settings, If a male has higher authority than a female, the woman should be introduced to the man.
A.
正确
B.
错误
【判断题】In Germany, smiles are often reserved for family, friends and social situations, and can be displayed freely in business settings.
A.
正确
B.
错误
【单选题】Listen to the passage and select the correct answers. 1. What is the current trend of VoIP in business settings?
A.
It has not been widely adopted by companies.
B.
It is being used more and more widely. .
C.
It has been used too much.
D.
It has already been outdated
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