Every student is _____ to obey the schoo 发布时间:2017-04-21 00:52 │ 来源:www.tikuol.com 题型:选择题 问题: Every student is _____ to obey the school rules.A.supposeB.supposedC.shouldD.ought
题型:选择题 欧姆表表头满偏电流为5mA,内装一节干电池,电动势为1.5V,做好测量前的准备工作后,将待测电阻接入红、黑表笔间,指针指在满刻度的3/4处,则该欧姆表的内阻为___________Ω,待测电阻为___________Ω。 查看答案