2021 英语短篇小说(通识课课程包课程) 最新满分章节测试答案
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本课程起止时间为:2021-02-19到2021-02-28
本篇答案更新状态:已完结
Unit 1 Early Autumn Unit 1 测验
1、 问题:The words on the cardboard “I’m blind, Please help” do not seem to draw much attention because _____.
选项:
A:people tend to ignore such familiar street side scenes
B:the language is too simple, and not eye-catching
C:the words have a commanding air that annoys people
D:the demand for help is not direct and strong enough
答案: 【people tend to ignore such familiar street side scenes 】 点我阅读全文
(2) 
是周期为
(s)的周期信号,
是周期为2/3(s)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。