皮皮学，免费搜题
登录
搜题
【简答题】
在信息系统开发中,数据库系统设计分为三个阶段,依次为概念结构设计( )结构设计和物理结构设计。
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】-----Who do you intend to have______your computer? ----- I haven’t decided yet. I wonder if you could help me。
A.
to repair
B.
repaired
C.
to be repaired
D.
repair
【简答题】必需氨基酸是指 但人体不能合成,或者人体合成的速度跟不上需要的氨基酸。
【单选题】A: I was hoping to get some bread from the bakery before it closes. B: ______.
A.
You'd better be quick. It will close at 7:00.
B.
My watch says 6:50,I'm afraid you'll be late. But don't be frustrated.
C.
I don't know when it closes.
D.
I've never been to that bakery.
【单选题】—Can I help you carry the bag? —________________.
A.
Needn’t.
B.
you couldn’t do it.
C.
I could do it myself.
D.
Thank you, but I can manage it myself.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
