皮皮学，免费搜题
登录
搜题
【多选题】
(末考:基础知识部分)以下有关概念模型的描述,正确的有( )【本题3项正确】A.
概念模型是现实世界到信息世界的第一层抽象
B.
概念模型不依赖计算机及DBMS
C.
概念模型是信息的真实全面反映
D.
概念模型是数据库设计人员和用户之间进行交流的语言
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】听力原文：M: If I were you, I would travel by plane instead of by bus. It will save your precious time. M: But flying always makes me so nervous. Q: What does the man mean? (17)
A.
He prefers taking a plane because the bus is too slow.
B.
He prefers taking a bus because the plane makes him nervous.
C.
He prefers staying at home to traveling by plane.
D.
He prefers traveling with the woman.
【单选题】听力原文：W: You never speak English unless you absolutely have to. I'll help you if you promise to speak nothing but English all the time. M: All right. Maybe I'll do that. It's the only way I'll be able ...
A.
The man speaks English all the time.
B.
The man is trying to improve his spoken English.
C.
The woman is teaching the man how to write in English.
D.
The woman will never speak English unless she absolutely has to.
【单选题】关于胃排空的说法,不恰当的是
A.
混合性食物在进餐后4~6小时完全排空
B.
胃的蠕动是胃排空的动力
C.
液体食物排空速度快于固体食物
D.
糖类食物排空最快,蛋白质最慢
E.
迷走神经兴奋促进胃排空
相关题目：
参考解析：
知识点：
题目纠错 0
发布
