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单位阶跃函数在t>=0 时的表达式为

单选题
2021-07-17 23:25
A、<strong style="white-space: normal;"><span style="font-size: 14px; font-family: 宋体;">1</span></strong>
B、<strong style="white-space: normal;"><span style="font-size: 14px; font-family: 宋体;">t</span></strong>
C、<strong style="white-space: normal;"><span style="font-size: 14px; font-family: 宋体;">t^2</span></strong>
D、<strong style="white-space: normal;"><span style="font-size: 14px; font-family: 宋体;">&nbsp;1/t</span></strong>
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正确答案
A
试题解析
标签： 发电厂及电力系统 高起专 自动控制原理 2020年第二学期期末考试
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