()对信息素材进行归纳和抽象,为智能决策支持提供强有力的数据资源保障。A、网络层 B、 发布时间:2021-02-13 18:43 │ 来源:www.tikuol.com 题型:单项选择题 问题: ()对信息素材进行归纳和抽象,为智能决策支持提供强有力的数据资源保障。A、网络层B、数据资源层C、资源共享与信息交换层D、应用层
题型:单项选择题 ---Isn't that your teacher over there? ---No, it ______ be him. I'm sure he doesn't wear glasses. [ ]A.can't B.must not C.won't D.may not 查看答案