可编程计数、定时器电路8253的工作方式共有() A.2种 B.4种 C.5种 D. 发布时间:2020-02-07 04:10 │ 来源:www.tikuol.com 题型:单项选择题 问题: 可编程计数、定时器电路8253的工作方式共有()A.2种B.4种C.5种D.6种
题型:单项选择题 The reason__________ their failure you know is _____they didn't get fully prepared for the experiment.A.why.., thatB.that.., whyC.for.., thatD.why.., because 查看答案