2021大学慕课答案 商务英语写作(常熟理工学院)1463876450 最新大学MOOC满分章节测试答案
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本课程起止时间为:2021-03-22到2021-07-11
本篇答案更新状态:已完结
UNIT 1 Workplace Letters & Emails Unit 1 Test
1、 问题:Decide whether the following sentences chosen from a letter are communicating facts, opinions and/or emotions.Mr. Thomson, the postman of our area deserves to be fired. He does not deliver the mails in time. Sometimes, he throws the packages in the open courtyards instead of putting it properly into the letter boxes installed in the houses. I have seen him even handing down letters to little children. Above all, Mr. Thomson is very rude and discourteous. He is not ready to own his mistake when it is brought to his notice. 点我阅读全文
(2) 
是周期为
的周期信号,
是周期为2/3的周期信号,两者没有最小公倍数,因此信号
不是周期信号。
,所以此信号为非周期信号。