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第一讲课后作业 通过查阅资料,写一篇2000字的学习报告,主要内容要求是: 1、常用电气传动控制技术; 2、电气传动自动化技术的核心内容(变频调速、智能驱动控制、工业数字化网络等技术); 3、信息时代的电气传动控制技术的发展趋势; 4、 举一例说明电气传动自动化技术的实际应用。 报告格式及要求: 题目:电气传动自动化技术发展现状与展望 一、前言 (200字以内) 二、电气传动自动化技术及发展概况(600字以内) 三、电气传动自动化技术应用(500字以内) 四、未来的电气传动自动化技术(500字以内) 五、结束语(100字以内) 通过学习通平台提交,截止时间:2020年2月23日24:00 。
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【单选题】Regardless of what caused it, I am grateful that have finally reached a point in my life_______I can appreciate my strengths, accept my weaknesses and try to be comfortable with everything in between.
A.
Why
B.
Where
C.
Which
D.
What
【简答题】英译汉: It has to be the Internet. Everything in the world is so connected because of it. It makes life easier in so many ways—I can’t imagine life without it.
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A.
正确
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错误
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A.
保持氧气化学性质的最小粒子是氧分子
B.
可用向下排空气法或排水法收集氧气
C.
铁丝在氧气中剧烈燃烧，生成 Fe 2 O 3
D.
利用如图装置可比较 MnO 2 和 CuO 对 H 2 O 2 分解的影响
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A.
you can never tell
B.
you’re kidding
C.
what you say
D.
you made it
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