皮皮学，免费搜题
登录
搜题
【单选题】
The earth is years old. [ ]A.
four thousands six hundreds
B.
four thousand six hundred
C.
four thousand and six hundred million
D.
four thousand six hundred millions
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】E-R 模型向关系模型转换时，三个实体之间多对多的联系m:n:p 应该转换为一个独立的关系模式，且该关系模式的主键由____组成。
A.
多对多联系的属性
B.
三个实体的主键
C.
任意一个实体的主键
D.
任意两个实体的主键
【单选题】The author thinks that harsh words are appropriate in the following situations EXCEPT
A.
when you see something unfair.
B.
when you are annoyed at someone's extremely foolish behavior.
C.
when you are enough with an arrogant person.
D.
when you are in disagreement with your colleagues.
【单选题】It can be inferred that the writer thinks that engineering curricula are
A.
strengthened when they include courses in design.
B.
weakened by the courses designed to develop mathematical skills.
C.
weak because they include some nonscientific components.
D.
strong despite the absence of nonscientific modes of thinking.
【简答题】Nina thinks that when
you live with a host family, you learn ___ .A. their language B. about their country
【多选题】在带电的电压互感器二次回路上工作时，应采取（）安全措施。
A.
严格防止短路或接地。应使用纪绝缘工具，戴手套。必要时，工作前申请停用有关保护装置、安全自动装置或自动化监控装置。
B.
接临时负载，应装有专用的隔离开关和熔断器。
C.
工作时应有专人监护，严禁将回路的安全接地点断开.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
